Which two statements help explain why digital storage of data is so reliable?
A. Memory chips are sturdy.
U B. Digital data usually deteriorate over time.
C. It is usually possible to recover data from a memory chip even
when the device containing it is broken.
D. Digital data are easier to copy than analog data are, making them
more accessible to thieves.
Answer:
A. Memory chips are sturdy.
C. It is usually possible to recover data from a memory chip even when the device containing it is broken.
Explanation:
Digital storage of data refers to the process which typically involves saving computer files or documents on magnetic storage devices usually having flash memory. Some examples of digital storage devices are hard drives, memory stick or cards, optical discs, cloud storage, etc.
A reliable storage ensures that computer files or documents are easily accessible and could be retrieved in the event of a loss.
The two statements which help explain why digital storage of data is so reliable are;
A. Memory chips are sturdy: they are designed in such a way that they are compact and firm.
C. It is usually possible to recover data from a memory chip even when the device containing it is broken.
Answer:
A and C
Explanation:
got it right on a p e x
What is one of the causes of mechanical weathering?
acid rain
oxidation
animal actions
carbon dioxide
The cause of mechanical weathering among the given options is animal actions. The correct answer is option C
WEATHERINGThis is the breaking down of rocks and minerals into particles of matters
There are three types of weathering. They are:
Physical weatheringchemical weatheringbiological weatheringThe one which is the cause of mechanical weathering among the given options is animal actions.
Therefore, the correct answer is option C
Learn more about weathering here : https://brainly.com/question/829782
Answer:
the answer is C animal actions
Explanation:
EDG 2022
An electron with a velocity of 14.4 m/s in the positive y-direction enters a region where there is a uniform electric field of 201 N/C in the positive x-direction. The mass of the electron is 9.109 × 10−31 kg.
What is the y-component of the electron’s displacement 2.40 μs after entering the electric-field region if no other forces act on it in μm?
What is the x-component of the electron’s displacement 2.40 μs after entering the electric-field region if no other forces act on it in m?
1. The electron experiences acceleration and moves independently in the y-direction.
2. The y-component of the electron's displacement after 2.40 μs in the electric field is -8.11 μm.
3. The x-component of displacement remains zero.
To calculate the y-component and x-component of the electron's displacement, we need to consider the motion of the electron in the electric field. Let's break it down step by step:
1. Acceleration of the Electron:
The electric field causes a force on the electron given by the equation: F = qE, where F is the force, q is the charge of the electron, and E is the electric field.
Since the charge of an electron is -1.6 × \(10^-^1^9\) C, and the electric field is 201 N/C, we can calculate the force:
F = (-1.6 × \(10^-^1^9\)C) * (201 N/C)
= -3.216 × \(10^-^1^7\) N
Using Newton's second law, F = ma, we can find the acceleration (a) of the electron:
a = F / m
= (-3.216 × \(10^-^1^7\) N) / (9.109 ×\(10^-^3^1\) kg)
= -3.530 × \(10^1^3 m/s^2\)
2. Displacement in the y-direction:
Since no other forces act on the electron, its motion in the y-direction is independent of the electric field. The equation for displacement (y) under constant acceleration is:
y = (1/2) * a *\(t^2\)
Substituting the values, where the time (t) is 2.40 μs (2.40 ×\(10^-^6\) s), we can calculate the y-component of displacement:
y = (1/2) * (-3.530 ×\(10^1^3 m/s^2\)) * (2.40 ×\(10^-^6 s)^2\)
= -8.11 μm
Therefore, the y-component of the electron's displacement 2.40 μs after entering the electric-field region is -8.11 μm.
3. Displacement in the x-direction:
Since the electron's velocity is only in the y-direction initially, the x-component of the displacement remains zero. Without any forces acting in the x-direction, the electron continues to move in the y-direction without changing its x-position.
Hence, the x-component of the electron's displacement 2.40 μs after entering the electric-field region is 0 meters.
Please note that the calculations provided are based on the given values and the provided formulas for displacement and acceleration.
For more such information on: acceleration
https://brainly.com/question/460763
#SPJ8
PLEASE ANSWER FASG I WILL MARK BRAINELIST PLEASEEEEE
The number of protons in the nucleus of an atom determines the species of the atom, i.e., the element to which the atom belongs. An atom has the same number of protons and neutrons. But the electron number cannot be used instead because (5 points)
a. electrons are not within the nucleus
b. electrons are negatively charged
c. electrons can be removed from or added to an atom
d. electrons are lighter than protons
The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)
Why the electron number cannot be used instead?The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.
This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.
Learn about electron here https://brainly.com/question/13998346
#SPJ1
A 4 kg block is pushed up an incline that makes a 30° angle with the horizontal, as shown in the figure. Once the block is pushed a distance of d = 5.0 m up the incline, the block remains at rest.
What is the approximate change in the gravitational potential energy of the block-Earth system when the block is held at rest compared to its original location at the bottom of the incline?
A) OJ
B) 100 J
C) 100/33 J
D) 200 J
Answer:
B) 100 J
Explanation:
Assuming the distance given is measured along the incline, the vertical change in height is (5 m)(sin 30°) = 2.5 m. Then the change in potential energy is ...
∆PE = mg(∆h) = (4 kg)(10 m/s^2)(2.5 m) = 100 J
The force is defined as the product of the mass and the acceleration. The energy stored in an object which is converted into kinetic energy is called potential energy.
The formula for the potential energy is mgh.
The correct answer is B that is 100J.
As the surface is inclined the vertical change in height is\((5 m)(sin 30^o) = 2.5\)m.
Therefore the potential energy after solving it is as follows:-
\(PE = mg(h) \\= (4 kg)(10 m/s^2)(2.5 m)\\\\= 100 J\)
For more information, refer to the link:-
https://brainly.com/question/2127750
two identical springs, each with a spring force constant k, are attached end to end. If a weight is hung from a single spring, it stretches the spring by a distance d. When this same mass is hung from the end of the two springs, which, again, are connected end-to-end, the total stretch of these springs is
Answer:
Δx = 2*d
Explanation:
According to Hooke's Law, in order to the mass be in equilibrium, when attached to one spring, no net force must act on it, so the algebraic sum of the elastic force and gravity must be zero, as follows:\(k*\Delta x = m*g (1)\)
If we hang the mass from the end of the two springs attached end to end, in order to be in equilibrium, the total elastic force must be equal to gravity, as we have already said.We can express this elastic force, as the product of a Keff times the distance stretched by the two springs combined, as follows:\(F = k_{eff} * \Delta x_{eff} = m*g (2)\)
Due to F is a tension, it will be the same at any point of the chain of springs, so we can write the following expression, for the distance stretched by any of the springs:\(\Delta x_{1} = \frac{F}{\ k_{1} } (3)\)
The total distance stretched will be the sum of the distances stretched by any spring individually:\(\Delta x_{} = \frac{F}{\ k_{1} } + \frac{F}{\ k_{2} } (4)\)
Replacing (4) in (2) and rearranging, we have:\(\frac{F}{k_{eff} } = \frac{F}{\ k_{1} } + \frac{F}{\ k_{2} } (5)\)
Since k₁ = k₂ = k, we can find keff, as follows:
\(k_{eff} = \frac{k^{2} }{2*k} = \frac{k}{2} (6)\)
Replacing (6) in (2), and making (2) equal to (1) we finally get:\(F = \frac{k}{2} * \Delta x_{eff} = k*\Delta x = m*g (7)\)
Solving for Δxeff:\(\Delta x_{eff} = \frac{2*k*\Delta x}{k} = 2* \Delta x = 2*d (8)\)
A bicycle with 26-inch diameter wheels is traveling at 20 mi/h. Find the angular speed of the wheels in rad/min.
______radians per minute.
How many revolutions per minute do the wheels make?
___revolutions per minute
A bicycle with 26-inch diameter wheels is traveling at 20 mi/h. Find the angular speed of the wheels in rad/min.
______radians per minute
___revolutions per minuteω = 1320 rad/min, Revolution per minutes = 210.084
Diameter = 24 in
Radius r = 24/2 in = 12 in = 12 × 2.54 cm = 30.48 cm = 0.3048 m
Linear Speed v= 15 mi/hr = 15 * 1609.34 / 3600 m/s = 6.7056 m/s
Angular Speed ω = v / r = (6.7056 m/s) / (0.3048 m) = 21.999945
ω = 22 rad/s = 22× 60 rad/min = 1320 rad/min
∴ 1 revolution = 2π rad
⇒1 rad = 1 / 2π rev
so 1320 rad/min = 1320 / 2π rev/min = 210.0845 rev/min
Revolution per minutes = 210.0845
To learn more about angular speed visit : https://brainly.com/question/14882921
#SPJ9
Why do you need to apply a force in order to get the box to move?
Kelli felt obligated to answer the phone when her mom called. She really was not paying attention to the conversation, but every once in awhile would say, "Yes" or "Okay" just to keep her mom satisfied.
This hurtful listening habit is called:
A. Defensive Listening
B. Selective Listening
C. Bad Listening
D. Pseudolistening
Although she wasn't truly listening to what was being said, she would occasionally say "Yeah" or "Okay" to appease her mother. This destructive listening behaviour is known as: Defensive listening, first
What constitutes a poor listening habit?Interrupting, eavesdropping, being confrontational, egotistical, defensive, selective, insensitive, and pseudo-listening are some examples of these poor listening techniques.
A faux listener is what?Pseudolistening– having to pretend to pay any attention and did appear considerate but is not trying to listen to realise or translate the data (audience members may answer back with a smile, mouth, or even a verbal cues appreciation but are dismissing or not planning to attend).
To know more about occasionally visit:
https://brainly.com/question/29279121
#SPJ1
Soda from a mS = 12 oz can at temperature TS = 12.5°C is poured in its entirety into a glass containing a mass mI = 0.17 kg amount of ice at temperature TI = -19.5°C. Assume that ice and water have the following specific heats: cI = 2090 J/(kg⋅°C) and cS = 4186 J/(kg⋅°C), and the latent heat of fusion of ice is Lf = 334 kJ/kg. In this problem you can assume that 1 kg of either soda or water corresponds to 35.273 oz.
The final temperature of the mixture of ice and soda is equal to 5 °C with a specific heat of soda and ice.
From the given,
mass of soda = 12 oz
temperature (Ts) = 12.5 °C
mass of ice (Mice) = 0.17 Kg
The temperature of ice (Tice) = -19.5°C
Specific heat of ice (Cice) = 2090 J/kg°C
Specific heat of water (Cwater) = 4186 J/kg°C
Latent heat of fusion of ice (Lf) = 334 kJ/kg.
The final temperature (T₂)=?
Mass of water = 12 / 35.274 = 0.34 kg
The heat lost by soda = heat gained by the ice
heat (Q) = m×c×ΔT where m is mass, C is specific heat and ΔT is a change in temperature.
M(soda)×C(water)×ΔT = M(ice)×Lf + M(ice)×C(ice)(T₂-T₁) + M(ice)×C(w)(T₂-0)
0.34×4186×(T₂-12.5) = (0.17×334) + (0.17× 2090×(T₂ + 19.5)+ (0.17×4186×T₂)
17790.5 - 1423.24 (final temp)= 6985.13 + 711.62 (final temp)
10805.37 = 2134.56 (final.temp)
T₂= 10805.37 / 2134.56
= 5 °C.
Thus, the final temperature of the mixture is 5°C.
To learn more about Latent heat :
https://brainly.com/question/30762921
#SPJ1
Jeff finds a pond during a nature walk, and he has some questions based on his observations of the pond.
Which question can he answer through a scientific investigation?
Which organisms are part of the food web in the pond?
How much money should be spent to make the pond more attractive?
Which pond animals would make the best pets?
Which plants in the pond are the prettiest in summer?
Answer:
Which organisms are part of the food web in the pond?
Explanation:
A "scientific investigation" is a method of looking for an answer with the help of a scientific method. It helps a person learn more about the world around him.
Since the scientific investigation only employs "measurable" observations, then the only question he can ask is the types of organisms (which is measurable) that belonged to the pond's food web. This question is more focused on observing the pond, unlike the other questions that talked about different things like money, having a pet and summer season–these are not directly observable and measurable in the current situation.
Answer: Which organisms are part of the food web in the pond?
Explanation:
From a height of 30 meters we throw an object vertically downwards with a speed of 2 m/s. How long will it take to reach the ground and with what speed?
1. The time taken for the object to reach the ground is 2.47 s
2. The speed with which the object will reach the ground is 26.206 m/s
1. How do I determine the time taken?
We can obtain the time taken for the object to reach the ground as follow:
Height (h) = 30 metersAcceleration due to gravity (g) = 9.8 m/s²Time taken to reach the ground (t) = ?h = ½gt²
30 = ½ × 9.8 × t²
30 = 4.9 × t²
Divide both side by 4.905
t² = 30 / 4.9
Take the square root of both side
t = √(30 / 4.9)
t = 2.47 s
Thus, the time taken to reach the ground is 2.47 s
2. How do i determine the speed?
The speed the object will use to reach the ground can be obtained as follow:
Initial speed (u) = 2 m/sTime (t) = 2.47 sAcceleration due to gravity (g) = 9.8 m/s²Final speed (v) =?v = u + gt
v = 2 + (9.8 × 2.47)
v = 2 + 24.206
v = 26.206 m/s
Thus, the speed is 26.206 m/s
Learn more about motion under gravity:
https://brainly.com/question/16936121
#SPJ1
The projectile motion of an object can
be described by two independent
vector components that are
______
Answer:
perpendicular
Explanation:
The projectile motion of an object can be described by two independent vector components that are horizontal and vertical motion.
What is projectile motion?The motion of an item hurled or projected into the air, subject only to gravity's acceleration, is known as projectile motion.
The item is known as a projectile, and the course it takes is known as a trajectory. Falling object motion is a simple one-dimensional kind of projectile motion with no horizontal movement.
The projectile's motion is divided into two parts: horizontal and vertical motion.
Because perpendicular motion components are independent of one another, these two motion components may be treated individually.
Hence two independent vector components are horizontal and vertical motion.
To learn more about the projectile motion refer to the link;
https://brainly.com/question/11049671
1 If electromagnetic radiation acted like particles in the double-slit experiment, what would be observed?
a The screen would remain dark because no radiation would reach the screen.
b One bright band would appear in the center of the screen.
c A series of light and dark bands would appear on the screen.
d Two bright bands would appear on the screen in line with the slits.
2 Which statement about the interference behavior of electromagnetic radiation seen in the double-slit test experiment is true?
a Waves that make up the radiation collide with each other so that they add together or cancel each other out.
b Particles that make up the radiation collide with each other and scatter randomly.
c Particles that make up the radiation collide with each other so that they add together or cancel each other out.
d Waves that make up the radiation do not interact with each other.
3 Which statement about the observed results of the double-slit experiment is true?
a Waves that are out of phase constructively interfere to create bright bands.
b Waves that are in phase destructively interfere to create bright bands.
c Waves that are out of phase constructively interfere to create bright bands.
d Waves that are in phase constructively interfere to create bright bands.
4 Which statement about the observed results of the double-slit experiment is true?
a Waves that are in phase constructively interfere to form dark bands.
b Waves that are out of phase constructively interfere to form dark bands.
c Waves that are in phase destructively interfere to form dark bands.
d Waves that are out of phase destructively interfere to form dark bands.
5 A scientist decreases the wavelength of the light used in a double-slit experiment and keeps every other aspect the same. What will be true about the new interference pattern seen on the screen compared to the original interference pattern?
a The spacing between the dark fringes will increase.
b The spacing between the bright fringes will increase.
c The spacing between the bright fringes will decrease.
d The spacing between the dark fringes will remain the same.
6 Consider the two-slit interference experiment. Electromagnetic radiation passes through the two slits that are a distance of 0.0170 nm apart. A fourth-order bright fringe forms at an angle of 8.0 degrees relative to the incident beam. What is the wavelength of the light?
a 789 nm
b 420 nm
c 581 nm
d 591 nm
Answer:
1. Two bright bands would appear on the screen in line with the slits.
2. Waves that make up the radiation collide with each other so that they add together or cancel each other out.
3. Waves that are in phase constructively interfere to create bright bands.
4. Waves that are out of phase destructively interfere to form dark bands.
5. The spacing between the bright fringes will decrease.
6. 581 nm
Explanation:
which of the following can enter and exit an open system?
A. Matter but not energy
B. energy but not matter
C. Matter and energy
D. Neither energy nor matter
A open system that is open to its surroundings can trade both matter and energy.
In an open system, what is possible?Both matter and energy can be transferred between an open system and its surroundings. The stovetop example would be regarded as an open system because heat and water vapour might be lost to the atmosphere. On the other hand, a closed system can only exchange energy, not matter, with the environment.
A system is considered to exist when energy can enter or escape it.A closed system is a type of thermodynamic system in which mass is conserved within the system's boundaries but energy can easily enter or leave the system. Depending on what is being exchanged, the interactions between the system and its environment alter.
To know more about open system visit:-
https://brainly.com/question/12825155
#SPJ1
Answer: C
Explanation:
i just took it
Which particles are considered nucleons? O A. Electrons and neutrons O B. Neutrons and protons OC. Protons and electrons D. Only electrons
The particles that are considered nucleons are neutrons and protons. Option B.
What are nucleons?Nucleons are particles found in the nucleus of an atom, specifically protons and neutrons.
Protons have a positive charge, while neutrons have no charge, and together they make up the majority of the mass of an atom.
Electrons, on the other hand, are much smaller than protons and neutrons, and they orbit around the nucleus in shells. Since they are not found in the nucleus, electrons are not considered nucleons.
More on nucleons can be found here: https://brainly.com/question/17116720
#SPJ1
SuperPointParticleDog is playing tug of war with two other dogs, Isaac and Newton. Isaac is pulling with a force of 255 N, 13 degrees North of East on one rope attached to a ball. Newton is pulling with a force of 156 N, 34 degrees South of East on another rope attached to the ball. If the ball is moving with constant momentum toward SuperPointParticleDog, what is the East/West component of her force on the ball?
The East/West component of SuperPointParticleDog's force on the ball is -115.7 N. (Westward).
How to explain tje informationIsaac's force:
Magnitude: 255 N
Angle: 13 degrees North of East
x-component: 255*cos(13) = 245.1 N (Eastward)
y-component: 255*sin(13) = 58.1 N (Northward)
Newton's force:
Magnitude: 156 N
Angle: 34 degrees South of East
x-component: 156*cos(34) = 129.4 N (Westward)
y-component: 156*sin(34) = 86.5 N (Southward)
Now we can add the x- and y-components of the forces to find the net force:
Net force:
x-component: 245.1 N - 129.4 N = 115.7 N (Eastward)
y-component: 58.1 N - 86.5 N = -28.4 N (Southward)
The net force has an Eastward component of 115.7 N. Therefore, the East/West component of SuperPointParticleDog's force on the ball is -115.7 N. (Westward).
Learn more about force on
https://brainly.com/question/12970081
#SPJ1
The basal metabolic rate is the rate at which energy is produced in the body when a person is at rest. A 157 lb (71.0 kg ) person of height 5.91 ft(1.80 m ) would have a body surface area of approximately 1.90 m2 .
Reqiuired:
a. What is the net amount of heat this person could radiate per second into a room at 19.0 ∘C (about 66.2∘F) if his skin's surface temperature is 31.0 ∘C? (At such temperatures, nearly all the heat is infrared radiation, for which the body's emissivity is 1.00, regardless of the amount of pigment.)
b. Normally, 80.0 % of the energy produced by metabolism goes into heat, while the rest goes into things like pumping blood and repairing cells. Also normally, a person at rest can get rid of this excess heat just through radiation. Use your answer to part A to find this person's basal metabolic rate(BMR).
Answer:
A. Net amount of heat radiated = 109.2W
B. Person's basal energy = 136.5
Explanation:
Part A:
Area of person, A = 1.90 m^2
Temperature of person , T = 31 C
T = 304 K
Temperature of surroundings , To = 19 C
To = 282 K
Now, net amount of heat radiated = e*A*sigma *(T^4 - To^4)
Net amount of heat radiated = 1 * 1.8 * 5.6703 *10^-8 *(304^4 - 294^4)
Net amount of heat radiated = 109.2 W
The net amount of heat radiated is 109.2 W
Part B:
Person's basal energy = net amount of heat radiated /(0.80)
Person's basal energy = 109.2/0.80
Person's basal energy = 136.5 W
Person's basal energy is 136.5 W
Knowing that a ball traveled 16 feet in one second, how much will it travel in the first quarter second?
Answer:
4 Feet
Explanation:
Because A Quarter of 16 is 4
You really can't tell. You don't know if its speed was constant for the whole second, or whether it was accelerated, decelerated, intermittent, bouncing back and forth, etc. All you know is that after 1 second, it had moved 16 ft.
IF its speed was constant AND it moved in a straight line, THEN it moved 4 ft in the first quarter of that second.
If it rolled off of a roof and FELL 16 ft in the first second, then it fell 1 foot in the first quarter second.
why does liquid candle wax flow but solid candle wax does not?
Answer:
Because the matter in solid objects doesn't move
Explanation:
Logic
An object with mass m is given initial velocity to slide across a horizontal plane AB towards a semi circle BCD with radius R.
Between the object and the plane exists a kinetic friction u_k=0.5, but only between the section FB with length R. F is in the middle of A and B. The inside of the circle is smooth.
When the object reached to point C, it applies a force of 3mg on the semi circle.
The object is going to the left.
1. Write an expression for the initial velocity at point A.
The expression for the initial velocity at point A is:
0 = (velocity at point A - 0) / time
Simplifying the equation, we find:
Velocity at point A = 0
The initial velocity at point A is zero, indicating that the object starts from rest before sliding on the horizontal plane AB.
To write an expression for the initial velocity at point A, we need to analyze the forces acting on the object and apply the principles of motion.
Given:
Mass of the object, m
Radius of the semi circle, R
Coefficient of kinetic friction, μ\(_k\) = 0.5
Force applied at point C, F = 3mg
The object is initially at rest.
Let's break down the motion into two parts: the motion on the horizontal plane AB and the motion along the semi circle BCD.
1. Motion on the horizontal plane AB:
The only force acting on the object on the horizontal plane is the force of kinetic friction. The frictional force can be calculated using:
Frictional force, f = μ\(_k\)* Normal force
The normal force is equal to the weight of the object, which is mg.
Normal force, N = mg
Frictional force, f = μ\(_k\) * mg
The frictional force acts in the opposite direction to the motion, so its magnitude is negative. Thus, the net force on the object on the horizontal plane is:
Net force = -f = -μ\(_k\)* mg
Using Newton's second law, we can relate the net force to the acceleration:
Net force = mass * acceleration
-μ\(_k\) * mg = m * acceleration
The acceleration can be expressed as the rate of change of velocity:
Acceleration = (final velocity - initial velocity) / time
Since the object is initially at rest, the initial velocity is zero.
For more such information on: velocity
https://brainly.com/question/80295
#SPJ8
ASSIGNMENT what is the length of wire whose resistivity 3x10^-6ohm with the r=0.2mm with a given Value of 15.552 Resistance.
The length of wire whose resistivity is 3 x 10^-6ohm, and radius is 0.2 mm, with a given value of 15.552 resistance is 6.5268 m.
Given data: r = 0.2 mm = 0.2 x 10^-3m Resistivity = 3 x 10^-6 ohm R = 15.552 ohm
Formula Used: Resistivity (ρ) = (RA)/L
Where, R is resistance, A is the area of cross-section, L is the length of the wire.
Resistance (R) = ρ (L/A)
Multiplying A on both sides, we get
Resistance (R) x A = ρ L ... equation (1)
Area of the cross-section of a wire of radius (r) is given by, A = πr^2
where, π is a constant whose value is 3.14
Substituting the given values, we get
A = πr^2= π (0.2 x 10^-3m)^2= 1.2566 x 10^-7 m^2
Substituting the values of R, A and ρ in equation (1), we get
Length of wire (L) = (Resistance x Area) / Resistivity= (15.552 ohm x 1.2566 x 10^-7 m^2) / (3 x 10^-6 ohm)= 6.5268 m
Therefore, the length of wire whose resistivity is 3 x 10^-6ohm, and radius is 0.2 mm, with a given value of 15.552 resistance is 6.5268 m.
For more such questions on resistivity, click on:
https://brainly.com/question/30934104
#SPJ8
After voltage was constant at 1.5 V, what did you observe about the motion of charges in the 3. external circuit? Observations (As voltage is increased, how do these quantities change?) Reasoning C V E Part 1 b-"V" and "A" constant- Battery Connected Keep the battery connected to the capacitor. With voltage at 1.5 V across capacitor and its area constant at its minimum value of 100 mm, slowly decrease the distance between the plates of capacitor to 2.0 mm. Observe the changes and provide reasoning in table below. was being decreased, what did you observe about the motion of charges in 4. As plate separation the external circuit? Reset to original configuration. Click the refresh button. Select all four options in top right comer (Plate Charges, Bar Graph, Electric Field, Current Direction). Connect Voltmeter across the capacitor and increase the battery voltage to 1.5 v After charging the capacitor to 1.5 V, disconnect the battery. Part 2 a "A" constant - Battery Disconnected With area of plates constant at 100 mm2, slowly decrease the distance between the plates of capacitor to 2.0 mm. Observe the changes and provide reasoning in table below. 8. Obtain an expression for magnitude of electric field E between the plates in terms of Q. A and . Show all work. USE EXTRA CALCULATIONS SHEET with calculations clearly identified if necessary to show all your work. Observations (As plate separation is decreased, how do these quantities change?)
1)Observations and Reasoning for Part 1b:
As for the motion of charges in the external circuit, it depends on the specific configuration of the circuit.
2)Observations and Reasoning for Part 2a:
The electric field between the plates of the capacitor also increases as the plate separation is decreased.
3)Expression for Electric Field E:
E = Q/(εA) = CV/(εA)
What is electric field?
A physics concept called the electric field is used to describe how an electric charge affects nearby charges. A modest positive test charge would feel that force per unit charge if it were placed at that location in space.As a vector quantity, the electric field has both magnitude and direction. The magnitude of the electric field is determined by the magnitude of the electric force at that location, and the direction is determined by the direction in which a positive test charge would travel in response to the electric force.According to the details, it appears that you ran an experiment to examine how the voltage across a capacitor and the plate separation affected the motion of charges and other physical parameters.
1. Observations and Justification for Part 1b:
The capacitance of the capacitor increases as the distance between the plates is reduced while maintaining a constant voltage of 1.5 V and a constant area of 100 mm2. The reason for this is that a parallel plate capacitor's capacitance is inversely proportional to the space between its plates.
Because the electric field is inversely proportional to the voltage across the capacitor, it also increases when the plate gap between the capacitor's plates decreases oppositely related to the space between the plates. As a result, the electric field between the plates gets stronger as the distance between the plates gets smaller while the voltage across the capacitor stays constant at 1.5 V.
2. Part 2a observations and reasoning:
The capacitor's capacitance increases for the same reason as in Part 1b as the space between its plates is reduced while maintaining its area at 100 mm2 and the battery is unplugged.
As the plate gap decreases, as previously mentioned, the electric field between the capacitor's plates also grows.
3. Expression for Electric Field E:
The following equation can be used to determine the size of the electric field E existing between a parallel plate capacitor's plate:
E = V/d
where d is the distance between the plates and V is the voltage across the capacitor.
The equation can be used to get the capacitance C of a parallel plate capacitor.
C = ε*A/d
where ε is the permittivity of the material between the plates, A is the area of each plate, and d is the distance between the plates.
By rearranging the above equation, we can express the electric field E in terms of Q, A, and C:
E = Q/(ε*A)
Since C = Q/V, we can also express the electric field E in terms of Q, A, and V:
E = Q/(εA) = CV/(εA)
Learn more about electric field click here:
https://brainly.com/question/14372859
#SPJ1
A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. The coefficients of static and kinetic friction between the hockey puck and the metal ramp are μs = 0.40 and μk = 0.30, respectively. The puck's initial speed is 3.8 m/s. What speed does it have when it slides back down to its starting point?
A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. The coefficients of static and kinetic friction between the hockey puck and the metal ramp are μs = 0.40 and μk = 0.30, respectively. The puck's initial speed is 3.8 m/s, Speed it will have when it slides back down to its starting point is 2.36 m/s
What is Friction?The resistance to motion of one object moving in relation to another is known as friction. It is not regarded as a fundamental force like gravity or electromagnetic, according to the International Journal of Parallel, Emergent and Distributed Systems(opens in new tab). The electromagnetic attraction between charged particles in two contacting surfaces, according to scientists, is what causes it.
using work energy theorem ,
change in kinetic energy = work done by frictional force
\(\frac{1}{2}\) m(\(x^{2}\)-\(y^{2}\)) = μmghcos30°
where mass is m=200g
x is speed with which it slides back
y is speed at top of metal ramp=3.8 m/s
μ is coefficient of kinetic friction=0.3
g is gravity = 9.8m/\(s^{2}\)
h is height to which hockey puck is reached on metal ramp=1.18m
Substituting the values and solving for speed x,
x=2.36m/s
speed it will have when it slides back down to its starting point is 2.36m/s
to know more about friction, visit;
brainly.com/question/28356847
#SPJ1
A plane is traveling at 80 m/s. To prepare for landing, itslows down at a rate of 0.25 ms squared for 120 seconds. Calculate the speed of the plane after it decelerates. I’ll give brainliest and everything to whoever gets it right please
Answer:
The speed of the plane after it decelerates is 50 m/s
Explanation:
Motion with Constant Acceleration
When an object gains or losses velocity in time, it acquires acceleration. If this value is constant, we can calculate the final velocity (or speed in scalar terms) as:
\(v_f=v_o+at\)
Where vf is the final speed, vo is the initial speed, a is the constant acceleration, and t is the time the acceleration is acting.
The plane is originally traveling at vo=80 m/s and it slows down at a constant rate of \(a=-0.25\ m/s^2\) during t=120 seconds. Note we have added the negative sign to the acceleration because the plane is slowing down, i.e., the acceleration is against the speed.
Thus, the final speed is:
\(v_f=80-0.25*120\)
\(v_f=80-30=50\)
\(v_f = 50\ m/s\)
The speed of the plane after it decelerates is 50 m/s
Heather and Jerry are standing on a bridge 46 m
above a river. Heather throws a rock straight down with a speed of 14 m/s
. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. How much time elapses between the first splash and the second splash?
The time elapsed between the first splash and the second splash is approximately 0.69 seconds.
To calculate this, we consider the motion of two rocks thrown simultaneously from a bridge. Heather throws a rock straight down with a speed of 14 m/s, while Jerry throws a rock straight up with the same speed.
We use the equation for displacement in uniformly accelerated motion: s = ut + (1/2)at^2.
For Heather's rock, which is thrown downwards, the initial velocity (u) is positive and the acceleration (a) due to gravity is negative (-9.8 m/s^2). The displacement (s) is the height of the bridge (46 m).
Solving the equation, we find two possible values for the time (t): t ≈ -4.91 s and t ≈ 1.91 s.
Since time cannot be negative in this context, we discard the negative value and consider t ≈ 1.91 s as the time it takes for Heather's rock to hit the water.
For Jerry's rock, thrown upwards, we use the same equation with the same initial velocity and acceleration. The displacement is also the height of the bridge, but negative.
Solving the equation, we find t ≈ -5.68 s and t ≈ 1.22 s. Again, we discard the negative value and consider t ≈ 1.22 s as the time it takes for Jerry's rock to reach its maximum height before falling back down.
To find the time difference between the first and second splash, we subtract t ≈ 1.91 s (Heather's rock) from t ≈ 1.22 s (Jerry's rock). This gives us a time difference of approximately 0.69 seconds.
Therefore, the time elapsed between the first splash and the second splash is approximately 0.69 seconds.
For more such questions on time elapsed, click on:
https://brainly.com/question/31287589
#SPJ8
A 120 V power supply is used to power a TV. If the TV draws 0.25 A of current and the TV is used for 1.20 h, how much energy, in kilojoules, is used?
The amount of energy used by the TV is 129.6 kJ.
What is electric energy?Electric energy is the product of charge and potential difference.
To calculate the amount of electric energy used, we use the formula below.
Formula:
E = Vit................................. Equation 1Where:
E = Electric energyV = Voltagei = Currentt = timeFrom the question,
Given:
V = 120 Vi = 0.25 At = 1.2 h = (1.2×3600) = 4320 sSubstitute these values into equation 1
E = 120×0.25×4320E = 129600 JE = 129.6 kJHence, the amount of energy used by the TV is 129.6 kJ.
Learn more about electric energy here: https://brainly.com/question/13881533
#SPJ1
1 The displacement of a "spring + mass" system in simple harmonic motion on a frictional less surface can be described by the expression x = A cos(3rt/T). The spring constant is k and the mass is m. Describe the potential as well as the kinetic energies of the system at the following time instances. (a) At t = 0. [2] (b) At t = T. [2] (c) At t = T/6. [2] (d) At t= T/3. [2] (e) At t = T/2. [2]
The potential and kinetic energy of the system at the following time instances is zero and maximum.
From the given,
The displacement of the system is, x = A cos(3πt/T)
1) At t =0, the displacement of the system is given by, x = cos(3π×0/T)= cos(0) = 1. The displacement is maximum at t=0. Hence, the potential energy is maximum and kinetic energy is zero.
2) At t=T, the displacement, x = cos(3πT/T)= cos(3π) = -1. The displacement is minimum and hence, the potential energy is minimum and kinetic energy is maximum.
3) At t = T/6, the displacement x = cos(3πT/6T)=cos(π/2)=0, the displacement is zero, and hence, both the potential and kinetic energy is zero.
4) At t=T/3, the displacement, x= cos(3πt/T)=cos(3πT/3)= -1. The displacement is minimum and hence, the potential energy is minimum and kinetic energy is maximum.
5) At t=T/2, the displacemetn x = cos(3πt/T) = cos(3πT/2T) = cos (3π/2)=0. Hence, both the potential and kinetic energy is zero.
To learn more about potential and kinetic energy:
https://brainly.com/question/15764612
#SPJ1
How do materials like metal and cardboard feel "colder" that others using energy transfer?
Answer:
The solid atoms or molecules are much more dense
Explanation:
Which book introduced Darwin’s theory of evolution in 1809? Guide to natural selection the vuvagw of the beagle the origin species capital.
Guide to natural selection
The voyage of the Beagle
The origin of species
Capital
None of the options listed were published in 1809. However, the correct answer to the question of which book introduced Darwin's theory of evolution is "The Origin of Species," which was first published in 1859.
Darwin's theory of evolution, also known as Darwinism, is a scientific theory that explains how species of organisms evolve over time through the process of natural selection. Darwin's theory is based on the idea that all living things have descended from a common ancestor, and that species change over time in response to environmental pressures, such as changes in climate, competition for resources, and predation.
According to Darwin's theory, individuals within a species exhibit natural variation, and those with characteristics that are advantageous for survival and reproduction are more likely to survive and pass on those advantageous traits to their offspring. Over time, these advantageous traits become more common within the population, while traits that are not advantageous become less common. This gradual process of change can eventually lead to the development of new species.
Darwin's theory of evolution is supported by a large body of evidence from many different fields of science, including paleontology, genetics, and biogeography. It is considered one of the most important scientific discoveries in history and has had a profound impact on our understanding of the natural world.
Learn more about Darwin's theory here:
https://brainly.com/question/25718754
#SPJ1
None of the options listed were published in 1809. However, the correct answer to the question of which book introduced Darwin's theory of evolution is "The Origin of Species," which was first published in 1859.
Darwin's theory of evolution, also known as Darwinism, is a scientific theory that explains how species of organisms evolve over time through the process of natural selection. Darwin's theory is based on the idea that all living things have descended from a common ancestor, and that species change over time in response to environmental pressures, such as changes in climate, competition for resources, and predation.
According to Darwin's theory, individuals within a species exhibit natural variation, and those with characteristics that are advantageous for survival and reproduction are more likely to survive and pass on those advantageous traits to their offspring. Over time, these advantageous traits become more common within the population, while traits that are not advantageous become less common. This gradual process of change can eventually lead to the development of new species.
Darwin's theory of evolution is supported by a large body of evidence from many different fields of science, including paleontology, genetics, and biogeography. It is considered one of the most important scientific discoveries in history and has had a profound impact on our understanding of the natural world.
Learn more about Darwin's theory here:
https://brainly.com/question/25718754
#SPJ1