Through space, a spacecraft is moving. It picks up speed abruptly. How would you characterize the spacecraft's kinetic energy? As the speed rises, the kinetic energy does too.
In plain English, what is kinetic energy?An object's kinetic energy refers to the energy it has as a result of motion. Applying force is necessary if we wish to accelerate an object. We have to put forth work to apply a force. After the job is finished, the object will be travelling at a new, constant speed because energy has indeed been transferred to it.
What is kinetic energy, and how is it used?Velocity is the force that propels motion, which can be seen in the movement of a particle, an object, or a group of particles. A person walking, a baseball being thrown, a piece of food falling from the a tabletop, as well as a charged particle inside an electric field all are instances of objects in motion that use kinetic energy.
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An ion gains 3.9 × 10–18 J of electric potential energy as it moves 22 mm at a 120° angle to a uniform electric field. The electric field strength is 740 N/C.
a) What is the charge of the ion?
b) What is the potential difference between the oil droplet’s starting point and end point in the Sample Problem above?
(a) The charge of the ion is determined as 2.76 x 10⁻¹³C.
(b) The potential difference between the oil droplet’s starting point and end point is 16.28 V.
Charge of the ion
The charge of the ion is calculated as follows;
W = Fdsinθ
F = W/dsinθ
F = (3.9 × 10⁻¹²)/(0.022 x sin120)
F = 2.046 x 10⁻¹⁰ N
E = F/q
q = F/E
q = (2.046 x 10⁻¹⁰)/(740)
q = 2.76 x 10⁻¹³C
Potential differenceE = V/d
V = Ed
V = 740 x 0.022
V = 16.28 V
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why are sicissors concidered a first class lever
Answer:
The Fulcrum is the pivot in the middle and the Force is applied with your hand at the end. The item being cut has a “Shear” force applied to it by the blades.
Hope it helps :))
A 5-kg ball is moving at 8 m/s to the right, suddenly 15 N force is applied to the ball and the ball is now moving at 12 m/s. How long was the force applied to the ball
Answer:
t = 1.33 seconds
Explanation:
Given that,
The mass of the ball, m = 5 kg
Initial speed, u = 8 m/s
Final speed, v = 12 m/s
Force, F = 15 N
We need to find the time for long the force is applied. Let the time be t. The force is given by :
\(F=\dfrac{m(v-u)}{t}\\\\t=\dfrac{m(v-u)}{F}\\\\t=\dfrac{5\times (12-8)}{15}\\\\=1.33\ s\)
So, the force is applied for 1.33 seconds.
the balmer series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number
the Balmer series of the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number 2, resulting in the emission of visible light.
The Balmer series of the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number 2. This series is characterized by the emission of visible light in the spectral range of 400 to 700 nanometers. The electronic transitions in the hydrogen atom occur when an electron moves from a higher energy level to a lower energy level, releasing energy in the form of light.
The Balmer series specifically corresponds to transitions from higher energy levels to the second energy level.In terms of the Balmer formula, which relates the wavelength of the emitted light to the energy levels involved in the transition, the value of n in the denominator is equal to 2 for the Balmer series. This results in a series of lines in the visible spectrum with specific wavelengths that correspond to specific electronic transitions.
In conclusion, the Balmer series of the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number 2, resulting in the emission of visible light. This series is an important part of atomic spectroscopy and has been instrumental in our understanding of the electronic structure of atoms.
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static electricity 5 examples and current electricity 5 examples
Explanation:
static electricity
1.lighting
2.rub your shoe on the carpet
3.walking across a carpet
4.touching a metal door handle
5. pulling your hat off and having your hair stand on end.
current electricity
1. Lightning.
2. Batteries.
3. charging your phone
4. hair dryer
5. microwave food
the leaning tower of pisa is 55 m tall and 7 m in diameter. presently, the top is 4.5 m from where it would be if it were straight. how far can the tower move before it would become unstable?
The tower can lean over the distance, x = 2.5m at the top.
It is assumed that the top is off-centered by distance, d=4.5m
The height of the tower is, h = 55m
Diameter of the tower is, D = 7.0m
Since we are assuming that the tower is uniform; so, its center of gravity (or center of mass) will be at its geometric center i.e.,
at height \(\frac{h}{2}\) = 27.5m from the base of support.
The tower can lean until a line projected downward through its center of gravity will fall outside its base of support of diameter. The center of mass can move a total of 3.5 m off of center and still be over the support base.
Corresponding to the center of mass, the top would have to move distance equal to one diameter (D) in order to put the center gravity over the pivot point of one side of the base.
So, further the top can lean over the distance,
x = D - d
x = 7.0 m - 4.5 m
x = 2.5 m
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help me match the numbers to terms
Answer:
1 represents the electron flow
2 represents the load.
3 represents the voltage source.
4 represents the conductive path.
Explanation:
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
\( V = IR\)
Where;
V represents voltage measured in voltage.
I represents current measured in amperes.
R represents resistance measured in ohms.
In an electrical circuit, there are various symbols used to represent different parameters or quantities as shown in the image attached above and these includes;
a. 1 represents the electron flow. This is a representation of the direction of flow of current.
b. 2 represents the load. This is the electrical appliance such as an electronic bulb that is being powered by the electrical circuit.
c. 3 represents the voltage source. This is typically a battery cell that provides the required amount of voltage for the circuit.
d. 4 represents the conductive path. This is the conductor that carries current from one point to another in the circuit such as copper.
2.0 L of a gas is heated from 20.0°C to 80.0°C at constant pressure. What is the new volume?
Answer:
The new volume will be = 2.41L
Explanation:
V1 = 2L
V2 = ?
T1 = 20⁰C = 293K
T2 = 80⁰C = 353K
From Charles law V is directly proportional to T
V1/V2 = T1/T2
V2 = (V1×T2)÷T1
just make substitution yourself
What are the scientific principles of physical science
Answer:
Describing and measuring motion. Newton's laws of motion. Forces, weight, and mass. Momentum and conservation of momentum.
The theory of gravity.
Energy, work, and power. Motion, position, and energy.
Explanation:
Answer:
lOl can i have brainliest
Explanation:
An ostrich is running with a velocity of 12.3 m/s and speeds up to 15.9
m/s in 5.2 seconds. What is the ostrich's acceleration?
A 0.69 m/s2
B 1.4 m/s2
C -0.69 m/s2
D -1.4 m/s2
The acceleration of the ostrich when running from 12.3 m/s to 15.9 m/s in 5.2 seconds is 0.69 m/s².
What is acceleration?This can be defined as the rate of change of velocity.
To calculate the acceleration of the ostrich, we use the formula below.
Formula:
a = (v-u)/t............ Equation 1Where:
a = Acceleration of the ostrichv = Final velocityu = Initial velocityt = TimeFrom the question,
Given:
v = 15.9 m/su = 12.3 m/st = 5.2 secondsSubstitute these values into equation 1
a = (15.9-12.3)/5.2a = (3.6)/5.2a = 0.69 m/s²Hence, the acceleration of the ostrich is 0.69 m/s². The right option is A. 0.69 m/s².
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I NEED HELP WITH THIS ASAP!!! Wet Lab - Coulomb's Law lab from edge!!
Answer:
Srry for the delay but this might help ppl in the future
Explanation:
PEACE OUT!
pls help me with this
Answer:
I can't see it because it's too blury. try to search it
One way that Ms. Morimoto’s perspective is the same as President Truman’s is the __________.
One way that Ms. Morimoto’s perspective is the same as President Truman’s is the belief that working peace is something we all do.
Who is a President?This is referred to as the officer in whom the chief executive power of a nation is vested and in most climes he/she is voted in after a election and the tenure could be four years etc.
The way in which Ms. Morimoto’s perspective is the same as President Truman’s is the belief that working peace is something we all do. This helps to prevent different types of conflict and in severe cases war which is therefore why it should be embraced.
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The density of water is 1000 kg m^3. What is the value expressed in gcm^-3 units? please help me..
(1) 1000 (2) 100 (3) 1 (4) 0.1 (5) 0.01
Here's the neat, cool way to convert units like this:
-- 1 kilogram = 1,000 grams
-- 1 meter = 100 centimeters
So . . . . .
(1000 kg/m³) x (1000 g/kg) x (1 m/100 cm)³ =
(1,000 kg/m³) x (1,000 g/kg) x (1 m³/1,000,000 cm³) =
(1,000 x 1,000 x 1 / 1,000,000) (kg-g-m³ / m³-kg-cm³) = 1 g/cm³
For work to be accomplished we must have?
A. an action which causes movement and an opposite reaction
B. an action which causes no movement or reaction
C. a force and a movement in the opposite direction of the force
D. a force and a movement in the same direction as the force
Answer:
a force and a movement in the same direction as the force.
Explanation:
A mixture contains salt, sand, pebbles, and grass. Which part of this mixture is soluble in water?
Answer:
salt
Explanation:
Answer:
(Salt) would be the soluble component.
A ball is thrown upwards into the air with an initial velocity of
17.5 m/s. What is the maximum height that the ball traveled
during that time (assuming there is no air resistance). Round your
answer to two decimals places.
Answer:
y = 15.61 [m]
Explanation:
To solve this problem we must use the following kinematics equation. We must bear in mind that the acceleration of gravity is negative since the direction of gravity is opposite to the direction of motion.
\(v_{f} ^{2} = v_{i} ^{2} -(2*g*y)\)
where:
Vf = final velocity = 0
Vi = initial velocity = 17.5 [m/s]
g = gravity acceleration = 9.81 [m/s^2]
y = height [m]
The final speed is zero, since the ball reaches the maximum height its speed will be zero since it cannot be lifted up more.
0 = (17.5)^2 - (2*9.81*y)
306.25 = 2*9.81*y
y = 15.61 [m]
I need help! Picture is the sheet.
Answer:
The answers to the questions are
1. Sound energy
2. Conductor
3. Flow
4. Thermal energy (g underlined)
5. Electric current
6. Insulator
7. Light energy
8. Electric circuit
The underlined letters are, e, n, g, r, y, e which can be rearranged to spell energy
Explanation:
1. Sound energy is the wave form of mechanical energy that is transferred by the vibration of the of the medium through which it propagates
2. An electrical conductor is used to conduct electricity from one point to another
3. An object or material flows when it has a smooth motion towards a given direction, such as a river
4. Thermal energy is the form of energy that is given off by a body as sensible heat that can be measured as a temperature by a thermometer
5. Electric current is the electricity in a circuit
6. An insulator is a material that limits the flow of electricity or heat
7. Light energy is the form electromagnetic energy which the eye can sense
8. An electric current flows an electric circuit which consist of a source of electricity and an path through which the electric current can easily flow.
Extimate the distance you can travel in 4 hours 50 minutes if you drive on average 41 miles per hour. Round your answer to the nessest mile:
Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.
To estimate the distance you can travel in 4 hours and 50 minutes at an average speed of 41 miles per hour, we need to convert the time to hours.
4 hours and 50 minutes is equivalent to 4.83 hours (since 50 minutes is 50÷60 = 0.83 hours).
Now, we can calculate the distance traveled using the formula: distance = speed × time.
Distance = 41 miles/hour × 4.83 hours
Distance ≈ 198.03 miles
Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.
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PLSSS HELP ITS URGENT ILL RATE YOU BRAINLIEST:) A truck whose bed is 4 m long, 2.2 m wide, and 1.0 m high is delivering sand for a sand-sculpture competition. About how many trips must the truck make to deliver 23 m^3 of sand?
Answer:
one truck load is 2.5*1.5*1 = 3.75m^3
7/3.75 = 1.86 loads,
so 2 trips must be made.
Explanation:
Several radio telescopes are combined into an interferometer in order to1) observe over a wider range of frequencies. 2) observe astronomical objects during daylight hours when the sky is otherwise too bright. 3) decrease the strength of the signal transmitted. 4) decrease the smallest angle which can be observed by the telescope.
Several radio telescopes are combined into an interferometer in order to 2) observe astronomical objects during daylight hours when the sky is otherwise too bright.
Why is an interferometer made of many radio telescopes?Radio astronomers may combine the signals from several antennas and even telescopes using interferometry. They are able to produce images that are more brighter and more precise than what is feasible with only one antenna dish.
To investigate objects in space, astronomers utilize a variety of telescopes sensitive to various regions of the electromagnetic spectrum. Despite the fact that all light is fundamentally the same, astronomers view light differently depending on the part of the spectrum they are interested in.
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A rocket is being launched straight up. Air resistance is not negligible. Draw a free body diagram.
Draw the force vectors with their tails at the dot. The orientation of your vectors will be graded. The exact length of your vectors will not be graded but the relative length of one to the other wil be graded
The length of the vector representing the air resistance force will be shorter than that of the gravitational force because the former is less than the latter.
Free body diagram for a rocket being launched straight up, considering air resistance- A free body diagram is a diagram that depicts the forces acting on a body. A free-body diagram shows all of the forces acting on an object in order to provide an accurate picture of the body's equilibrium or motion.
A body or object is isolated, and all forces acting on the object are indicated by arrows representing the magnitude and direction of the force applied. A rocket that is being launched straight up while air resistance is not negligible will have two forces acting on it.
They are gravitational force and air resistance force. Air resistance is a frictional force that opposes the motion of an object through the air. As the rocket moves upwards through the atmosphere, the force of air resistance acts in the opposite direction to the rocket's motion. Therefore, the air resistance force is acting downwards while the gravitational force is acting upwards.
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Rosita started riding her bike 3 km to her friend Gena’s place at exactly the same time Gena started skating to Rosita’s house. Gena, of course, wasn’t home, so Rosita rode back home. The two girls arrived at Rosita’s house at the same time. It took Rosita 30 minutes to ride to Gena’s and back. How fast did Gena skate?
Answer:
6km/hr
Explanation:
Lets make a chart
R. G
D 6km. 6 /2=3km
S. 6/1/1= 12 km/h. 6km/h= 3/1/2
T 1/2hr 1/2hr
so 6km/hr hope that helps if it does please mark as brainliest.
one of the strings on a musical instrument is 0.500 m in length and has linear mass density 1.17×10−3kg/m . the second harmonic on this string has frequency 512 hz . what is the tension in the string?
The strings on a musical instrument are 0.500 m in length and have a linear mass density of 1.17×10−3kg/m. the second harmonic on this string has a frequency 512 Hz, thus the tension in the string is T = 76.7 N
The wavelength of the sound wave that the string produces in the air is λ = 1.344 m
\(\(d = 1.17 \times 10^{-3} \, \text{kg/m}\)\)
f₂ = 512Hz
l = 0.500m
λ = l 0.500m
so,
\(\(v = \sqrt{\frac{T}{d}}\)\)
\(\[T = \left(\frac{512 \times 0.5 \, \text{m}}{2}\right)^2 \times (1.17 \times 10^{-3} \, \text{kg/m})\]\)
Therefore, the tension in the string is T = 76.7 N
2. f₁ = 256 Hz (fundamental frequency)
v = 344 m/s
Thus,
\(\[λ_1 = \frac{v}{f_1}\)
=\(\frac{344 \, \text{m/s}}{256 \, \text{Hz}}\)
Therefore, the wavelength of the sound wave that the string produces in the air is = 1.344 m.
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The average velocity of a plane is 600 km/h. How long does it take the plane to travel 120 km?
a. 0.2 hour
b. 0.5 hour
c. 0.7 hour
d. 5 hours
Answer:
\(\boxed {\tt A. \ 0.2 \ hour}\)
Explanation:
We can find time by dividing the distance by the velocity.
\(t=\frac{d}{v}\)
The distance traveled is 120 kilometers and the velocity of the plane is 600 kilometers per hour.
\(d= 120 \ km \\v= 600 \ km/hr\)
Substitute the values into the formula.
\(t=\frac{120 \ km }{ 600 \ km/hr}\)
Divide. Note the kilometers, or \(km\) will cancel each other out.
\(t=\frac{120 }{600 \ hr}\)
\(t= 0.2 \ hr\)
It will take 0.2 hours for the plane to travel 120 kilometers. Choice A is correct.
You are designing a lever to lift an object that weighs 500N. The lever exerts the output force 1 m from the fulcrum. How far from the fulcrum must an effort force of 250 N be applied to lift the object? Show your work.
A lever to lift an object that weighs 500N. The lever exerts the output force 1 m from the fulcrum.
To solve this problem, we can use the formula for the mechanical advantage of a lever
Mechanical Advantage = Output Force / Input Force
We know that the output force is 500 N and the input force is 250 N. Therefore, the mechanical advantage is
Mechanical Advantage = 500 N / 250 N
Mechanical Advantage = 2
Next, we can use the formula for the distance from the fulcrum to the input force
Distance from fulcrum to input force = Output Force distance / Mechanical Advantage
We know that the output force distance is 1 m. Therefore, the distance from the fulcrum to the input force is
Distance from fulcrum to input force = 1 m / 2
Distance from fulcrum to input force = 0.5 m
Hence, an effort force of 250 N must be applied 0.5 m from the fulcrum to lift the object that weighs 500N.
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A bus speeds up from 5 m/s to 15 m/s in 20 seconds. How far did it go during the 20 seconds? (use KE1 to find a, then use that to find xf)
The distance the bus travelled in 20 seconds is 12.75 m
The first step is to write out parameters given in the question
Final velocity= 15
Initial velocity= 5
Time= 20
Distance= ?
V² + U²= 2as
15² + 5²= 2(9.8)s
225+25= 19.6s
250= 19.6s
s= 250/19.6
= 12.75
Hence the distance the bus travelled in 20 seconds is 12.75 m
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Select the correct answer. What are the units for the spring constant, k?
A. newton meters
B. newton seconds
C. newtons/meter
D. newtons/second
E. newtons/seconds
Answer:
The spring constant,k is measured in newtons per meter
Answer:
C. NEWTON / METRE is the correct answer .Thank your ☺️☺️
PLEASE HELP I PAY 88 POINTS AND THANK YOU AND BRAINLIEST
Instructions: Answer the following questions in the space provided. Be sure to write your responses in complete sentences.
A father pushes his daughter and son on a sled down a hill.
Part A: Other than the force exerted by the father pushing the sled, identify two additional forces that act on the sled as it travels from the top of the hill to the bottom. (2 pts)
Part B: Explain how each force you identified in Part A will affect the motion of the sled. (2 pts)
Answer: Down below is the answer in complete sentences!
Explanation:
PART A:
Gravity and Acceleration are two additional forces acting upon the sled.
PART B:
Gravity will affect the sled by pulling it down, since the slope of the hill is negative.
Acceleration will affect the sled by gradually increasing it's speed, since the slope is downwards, which in addition to the initial force exerted plus gravity increases the speed, thus the sled accelerates.
Which of the following is a chemical change?
A. Water vapor in the air turns to liquid water in the form of rain
B. The oxygen in the air forms ozone in presence of UV rays
C. Dust and soot particles being suspended in the air
D. Sulphur dioxide being released in the air
Answer:
B
Explanation: