Answer:
Unbalanced forces
Explanation:
If you drop an object from a height of 1.8 m, it will hit the ground in 0.61 s. If you throw a baseball horizontally with an initial speed of 16 m/s from the same height, how long will it take the ball to hit the ground? answer in: ___s
Same time = 0.61 s
It falls from the same height, and the vertical component of the object's velocity is affected in the same way by the gravity independent of the horizontal component.
answer please in comment what i am typing
Answer:
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50 POINTS HELP Which statement describes the solar feature shooting off into space labeled C?
Image of the sun with three solar properties labeled by A, B, and C. Label A points to lit particles shooting outward from and then coming back towards the sun's surface. Label B points to a region on the sun's surface that is bright. Label C points to the a layer of the sun's atmosphere.
An envelope of plasma surrounding the sun
A stream of glowing gas that shoots out from the sun in an arch
A brief eruption of intense high-energy radiation from the sun's surface
A dark spot appearing from time to time on the sun's surface
An envelope of plasma surrounding the sun describes the solar feature shooting off into space labeled C.
What is a Solar flare?Near sunspots, the magnetic field lines frequently rearrange, cross, and tangle. A solar flare, which is a quick explosion of energy, may result from this. A lot of radiation is sent into space during solar flares.
Given, Image of the sun with three solar properties labeled A, B, and C.
Label A points to lit particles shooting outward from and then coming back toward the sun's surface.
Point A represents prominence.
Label B points to a region on the sun's surface that is bright.
Point A represents a Solar flare.
Label C points to the layer of the sun's atmosphere.
Point C represents Corona. Corona is a luminous envelope of plasma that surrounds the Sun and other celestial bodies. It is extended to millions of kilometers into space and is commonly seen during a total solar eclipse.
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Complete question:
Answer: the answer is a
Explanation:
A 30 kg kid on a bike is moving in the positive direction at 7 m/s.
6. A) Calculate: What is the kid's momentum (give the magnitude and the direction)? Show your work on your answer sheet: defined variables, formula used, numbers plugged in, answer with units. Round your answer to the nearest tenth if necessary.
The momentum of the kid weighing 30kg is 210kgm/s.
How to calculate momentum?Momentum in physics refers to the tendency of a body to maintain its inertial motion i.e. the product of its mass and velocity, or the vector sum of the products of its masses and velocities.
According to this question, a 30kg kid on a bike is moving in the positive direction at 7 m/s. The momentum is calculated thus;
Momentum = 30kg × 7m/s = 210kgm/s
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When the crest of one wave passes through the trough of another wave, ____ takes place. A. resonance B. diffraction C. constructive interference D. destructive interference
When the crest of one wave passes through the trough of another wave, destructive interference takes place.
What is the crest of a wavelength?The crest and trough of a wave, respectively, are its highest and lowest surface portions. The wave height is the vertical distance between the peak and trough. The wavelength is the horizontal separation between two consecutive crests or troughs.
When the crest of one wave passes through the trough of another wave, interference takes place.
This interference can be constructive, where the amplitudes of the waves add up, resulting in a larger wave, or destructive, where the amplitudes of the waves cancel out, resulting in a smaller wave or no wave at all.
The type of interference that occurs depends on the relative amplitudes, wavelengths, and phases of the two waves.
Therefore, destructive interference takes place when the crest of one wave passes through the trough of another wave.
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A wooden block has a mass of 12 kg and is experiencing a force of 6 N. Calculate the acceleration that the wooden block will experience. Give your answer to ONE DECIMAL PLACE.
Guys I need help on this
Answer:
I think its B.
Explanation:
A light bulb receives 100 J of energy electrically. It transfers 30 J of energy to the surroundings by heat. What is the efficiency of the light bulb?
Answer:
The efficiency of the light bulb is 30%.
Explanation:
Efficiency = output/input × 100%
Data
Energy input = 100J
Energy output = 30J
Efficiency = ?
Efficiency = Energy output/Energy input × 100%
Efficiency = 30J/100J × 100%
Efficiency = 0.3 × 100%
Efficiency = 30%
Therefore the efficiency of the light bulb is 30%.
Solve the science problem
Good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated.
CAN SOMEONE PLEASE ACTUALLY ANSWER THIS, PEOPLE JUST PUT RANDOM ANSWERS UNDER THE QUESTION I KEEP ASKING...
Answer:
gases that are not good at absorbing long wave photons of infra red.
Explanation:
border green house gases are hydrogen chloride and carbon monoxide.Border line gases like CO are weak gases but has indirect effects on global warming. This causes warming in the atmosphere.CO has a heavy mass and thus lies on border line ozone layer. These are bad absorbers unlike CO2 and steam which absorb long waves of photon of infra red well.Option B is correct
Please help help help mee
Answer:
.60 A
Explanation:
The RMS (Root Mean Square) voltage (the effective voltage) of the PEAK voltage is .7 * peak
.7 * 425 = 297.5 v
Now, V = IR re-arranged to V/R = I
297.5 v / 500 ohm = .595 A = ~ .6 A
A car starts with velocity of 3m/s and moves in a straight line with a constant acceleration if the velocity at the end of 5sec is 5.5 m/s find the uniform acceleration and the distance travelled in 10sec
Answer:
\huge{\underline{\underline{.........Answer.........}}}
.........Answer.........
Given:-
u = 0.3 m/s
v = 5.5 m/s
t = 5 seconds
Explanation:-
Case-1
Acceleration = ?
From the first law of motion.
v = u + atv=u+at
a = \frac{v - u}{t}a=
t
v−u
a = \frac{5.5 - 0.3}{5}a=
5
5.5−0.3
a = \frac{5.2}{5}a=
5
5.2
a = 1.04a=1.04
\boxed{\boxed{a = 1.04 m/s^2}}
a=1.04m/s
2
So,the acceleration produced is 1.04 m/s^2.
Case-2
Distance travelled = ?.
From second equation of motion.
s = ut + \frac{1}{2} a {t}^{2}s=ut+
2
1
at
2
s = 0.3 \times 10 + \frac{1}{2} \times1.04 \times 100s=0.3×10+
2
1
×1.04×100
s = 3 + \frac{1}{2} \times 104s=3+
2
1
×104
s = 3 + 52s=3+52
s = 55 \: meterss=55meters
\boxed{\boxed{s = 55 meters}}
s=55meters
So,the distance travelled is 55 meters.
Explanation:
This is just example for your question
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Question 4 of 10
Samples of different materials, A and B, have the same mass, but the sample
of B is higher in density. Which statement could explain why this is so?
A. The sample of material B has greater volume than the sample of
material A.
B. The particles that make up material A are more closely packed
together than the particles that make up material B.
C. The particles that make up material B are more closely packed
together than the particles that make up material A.
D. The particles that make up material A have more mass than the
particles that make up material B.
SUBMIT
in the description of the features for a new car model it says that it can reach a maximum speed of 180 km/h. If it moves at that speed, how far will the car travel in 3 h?
If it moves at given speed, the car travels, d = 540 km in 3 hours.
Equation :s = d / t
where,
s is speed
d is distance
t is time
So given data are :
s = 180km/h
t = 3 hour
d = ?
Now putting values,
speed = distance / time
180km/h = d / 3 h
d = 180 km/h x 3 h
d = 540 km
Speed :A scalar quantity, speed is defined as the size of the change in an object's position over time or the size of the change in an object's position per unit of time. Speed is calculated as Distance x Time. Time is calculated as Time = Distance / Speed. Distance is calculated as Distance = Speed x Time.
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Two particle (m1=0. 20kg, m2=0. 30kg) are poitioned at the end of a 2. 0-m long rod of negligible ma. What i the rotational inertia of thi rigid body about an axi perpendicular to the rod and through the center of ma?
The answer is 0.48 kg m^2
Rotational inertia of a rigid body about an axis perpendicular to the rod and through the center of ma
Given,
m1 = 0.2 kg
m2 = 0.3 kg
L = 2 m
Let the centre of mass is at a distance d from 0.2 kg.
So, m1 x d = m2 x (L - d)
0.2 x d = 0.3 x (2 - d)
2 d = 6 - 3d
5 d = 6
d = 1.2 m
Moment of inertia about the centre of mass,
I = m1 x d^2 + m2 x (L - d)^2
I = 0.2 x 1.2 x 1.2 + 0.3 x 0.8 x 0.8
I = 0.288 + 0.192
I = 0.48 kg m^2
Moment of inertia of rigid bodiesAll bodies have a tendency to resist changes to their current states, according to Newton's second law. A body in motion resists change by not coming to a complete halt right away, just as a body at rest resists change when it is put into motion. Similar to this, a rigid body's rotational inertia refers to the amount of torque necessary to modify the angular velocity of the body.
The concept of a rigid body's rotational inertia is crucial since it clarifies how much torque is needed to accomplish a certain goal. The mass of a rigid body and its distribution with regard to the axis around which it rotates have an impact on its rotational inertia.
The distance of the centre of mass from the axis of rotation increases or decreases the rotational inertia of a rigid body.
m1 x d = m2 x (L - d)
How much inertia does the rod have around a perpendicular axis?I=13mL2 I = 1 3 m L 2 is the moment of inertia for a rod that spins about an axis perpendicular to the rod and passing through one end. The moment of inertia is I=112mL2 if the axis of rotation passes through the middle of the rod.
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our eyes are not very good at seeing group of answer choices color in dim light. motion at our peripheries. differences in brightness. all of the above none of the above
Our eyes are not very good at seeing motion at our peripheries, color in dim light, and differences in brightness. So, the correct answer is "all of the above."
Motion at the Peripheries: Our central vision is more sensitive to detecting motion compared to our peripheral vision. Objects in our peripheral vision may appear less distinct or may require more pronounced movement to be perceived as motion.
Color in Dim Light: Our ability to perceive color diminishes in low light conditions. In dim lighting, our eyes rely more on rods (photoreceptors responsible for low-light vision) than cones (photoreceptors responsible for color vision), resulting in a reduced perception of color.
Differences in Brightness: Our eyes have limitations in perceiving subtle differences in brightness, especially in low contrast situations. This can make it challenging to distinguish fine details or subtle variations in shades of gray when the contrast between objects is low.
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What sort of math formula would I use to find a solution to a problem like this, please direct me!
A piece of music with a tempo of 100beats per minute (bpm) has a playing time of 3 minutes. The piece is edited to have a playing time of 120beats per minute.
How long will the edited piece play in minutes?
2 point 0 minutes
4 point 0 minutes
3 point 5 minutes
2.5 minutes
To listen to the music at a tempo of 110 beats per minute (bpm), it takes Pam approximately 3.6 minutes. Given that Pam uses 5 minutes to listen to the music at a tempo of 80 bpm when she feels unhappy.
We can determine the time it takes for her to listen to the music at a tempo of 110 bpm. We can set up a proportion to find the relationship between the two tempos: 80 bpm / 5 minutes = 110 bpm / x minutes To solve for x, we can cross-multiply:
Rounding to the nearest tenth, it takes Pam approximately 6.9 minutes to listen to the music at a tempo of 110 bpm. However, the options provided specify that the answer should be in minutes and rounded to the nearest tenth. Therefore, the answer would be 3.6 minutes This means that when Pam increases the tempo of the music to 110 bpm, it takes her approximately 3.6 minutes to listen to the entire piece.It's important to note that the calculation assumes a linear relationship between tempo and time, which may not always hold true in practice due to various factors such as individual preferences, interpretation, and variations within the music itself. However, for the purpose of this question, we can use the proportion to estimate the time.
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Lines 621–644: Explain why Proctor is considered the protagonist(good character) of The Crucible. Consider the main events of the plot so far and analyze their connections to Proctor.
In Arthur Miller's play "The Crucible," John Proctor is the protagonist and central character.
Explain why Proctor is considered the protagonistHe faces a moral dilemma and internal conflict as he grapples with his own integrity. Proctor emerges as a critic of the witch trials, opposing the hysteria and challenging the authority of the court.
He undergoes a transformation, sacrificing his reputation and ultimately his life in an attempt to expose the truth and save innocent lives.
Proctor's flawed but fundamentally good-hearted nature and his tragic fate elicit sympathy from the audience. Through his character, the play explores themes of morality, truth, and the consequences of societal hysteria.
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What force does the winning player exert on the ground to move forward if his mass plus equipment is 106 kg
the force that the winning player exerts on the ground to move forward is equal to their mass times acceleration. The explanation is as follows:When an object is in motion, the force applied to it is equal to the object's mass multiplied by its acceleration.
The same principle applies to the winning player who exerts force on the ground to move forward.When a player moves forward while playing a game, he applies force to the ground, and the ground applies an equal and opposite force to the player. The player's mass plus equipment equals 106 kg. This is the force that the ground exerts on the player to move forward,
which can be represented as:F = maWhere F is the force applied, m is the mass of the player plus equipment, and a is the acceleration of the player. The force that the player applies to the ground is the same as the force that the ground applies to the player. Therefore, the force that the winning player exerts on the ground to move forward is equal to their mass times acceleration.
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describe the trends of the elements including boiling/melting points and conductivity in relation to the periodic table
Explanation:
modern quantum mechanics explains these periodic trends in properties in terms of electron shells. the filling of each shell corresponds to a row in the table
what is atomic weight
Answer:
Its also know as atomic mass its the mass of isotopes.
Explanation:
relative atomic masses of sources in the local environment of the Earth's crust and atmosphere as determined by the atomic weight.
Use the electron arrangement interactive to complete the table
The number of electrons that is needed to fill the following sublevels are:
1s = 2 electrons. 2s = 2 electrons. 2p = 6 electrons. 3s = 2 electrons. What is the number of electrons needed to complete the table?The formula to find this out is:
= 2 x (2 x Level +1)
1s = 0 levels
Number of electrons:
= 2 x (2 x 0 + 1)
= 2 electrons
2s = 0 levels
= 2 x (2 x 0 + 1)
= 2 electrons
2p = 1 level
= 2 x (2 x 1 + 1)
= 6 electrons
3s = 0 levels
= 2 x (2 x 0 + 1)
= 2 electrons
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The completed table using the electron arrangement interactive is attached below. In this table for sublevel 1s, 2s, 2p and 3s electron needed is 2,2,6 and 2 respectively.
What is electron arrangement?The electron arrangement is the way or process to arrange the electrons in an atom. The number of electron needed per sublevel are expressed in following points.
The number of electron need to feel sublevel 1s is 2.The number of electron need to feel sublevel 2s is 2.The number of electron need to feel sublevel 2p is 6.The number of electron need to feel sublevel 3s is 2.The image of the table which fill the sublevel is attached below. In this table all the electron is fulfilled with needed electrons.
Thus, the completed table using the electron arrangement interactive is attached below. In this table for sublevel 1s, 2s, 2p and 3s electron needed is 2,2,6 and 2 respectively.
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B
Vo = 30 m/s
m = 0.150 kg
Calvin
catches the
ball
According to his second law, a force is defined as the change in momentum (mass times velocity) per change in time.Force is equal to 0.15 x 9.8 x 1.47 Newton.
Find the solution ?According to his second law, a force is defined as the change in momentum (mass times velocity) per change in time.
The mass m of an object times its velocity V is how momentum is calculated.
One of the most crucial principles of physics is Newton's second law.
For a body whose mass m is fixed, the equation F = ma can be used, where F (for force) and a (for acceleration) are both vector values.
A body is accelerated according to the equation if it is subject to a net force.
The only force acting on the ball will be gravity because we are ignoring air resistance.
Newton's second rule states that F = ma, where m is the ball's mass (0.15 kg) and an is the acceleration due to gravity (9.8 m/sec2).
To obtain the force, substitute:Force is equal to 0.15 x 9.8 x 1.47 Newton.
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True or false organisms only compete with their own species?
Answer: yes
Explanation:
Animals of different species typically compete with each other only for food, water and shelter. But they often compete with members of their own species for mates and territory as well.
When two bodies with different masses have the same momentum. a) have equal kinetic energies b) the body with the greater mass has greater kinetic energy. c) the body with the largest mass has less kinetic energy.choose the correct answer 
The momentum of an object is the product between mass and velocity, if the two bodies have different masses but same momentum, it means they have different velocity, the body with greater mass has greater velocity, hence, it has greater kinetic energy because this energy depends directly on the velocity.
Therefore, the answer is B.
Identify the scenario, where the crash sensor of a car can possibly send signals to inflate the airbag in automobiles.
When a car is stopped abruptly by an impact, the airbags are inflated.
An airbag is an inflatable safety device designed to protect the occupants of a car in case of a collision. The airbags are part of an occupant restraint system and are also referred to as air cushion restraint system. Airbags supplement the basic protection offered by seat belts.
When a car is stopped abruptly by an impact, all bodies or objects that are not firmly fixed to the car will continue to move at the impact speed. The sensors measure this acceleration and relay it to the control unit as usable data.
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A sound wave with a wavelength of 0.82 m passes through air, and then it passes through a glass window, where its wavelength changes to 13 m. If the sound wave has a constant frequency of 440 Hz, what is its approximate speed as it passes through the glass? (The equation for wave speed is v= fx 1.)
A. 350 m/s
B. 570 m/s
C. 5,700 m/s
D. 3,500 m/s
Answer:
D. 5,700 m/s
Explanation:
Sorry for the late reply! I recently just answered this earlier.
Answer: C
Explanation: just took the test
a solid piece of lead has a mass of 31.58 g and a volume of 2.79 cm3. from these data, calculate the density of lead in si units (kilograms per cubic meter).
The density of lead in SI units (kilograms per cubic meter) is 11,320.43 kg/m³.
The formula for the density of a material is expressed as follows; Density = Mass/Volume.
To find the density of the solid lead, you need to divide the mass of lead by the volume of lead.
Since the mass of lead is 31.58 g and the volume is 2.79 cm³; Density = Mass/Volume
Density = 31.58 g/2.79 cm³
We know that 1 cm³ = 1 ml, and 1 ml of water = 1 g. So, 1 cm³ of water has a mass of 1 g and occupies a volume of 1 cm³.
So the volume of lead in SI units (m³) is found by converting 2.79 cm³ to meters: Volume (m³) = (2.79 cm³) × (0.01 m / 1 cm)³ = 2.79 × 10⁻⁶ m³
Now, substituting the values above into the density formula; Density = 31.58 g/2.79 cm³Density = 11320.43 kg/m³
Therefore, the density of lead in SI units (kilograms per cubic meter) is 11,320.43 kg/m³.
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How fast would a 20 kg dog have to run, to reach a momentum of 120 kg x m/s? Include unit in your answer. Worth 40 points!
Answer:
6 m/s
Explanation:
momentum= mass times velocity
120 = 20v
v = 120/20
Answer:
7
Explanation:
7
If the temperature T of a gas doubles, by what factor does the average kinetic energy of the individual molecules change? By what factor does the rms-speed change?
When the temperature T of a gas doubles, the average kinetic energy of the individual molecules increases by a factor of 2. The rms-speed increases by a factor of √2.
Explanation:
What is the average kinetic energy of the molecules?
The kinetic energy of the particles in a substance is referred to as thermal energy. The average kinetic energy of the particles in a substance is known as the average kinetic energy. The equation for calculating the average kinetic energy is given by
1/2 * (m) * (v^2) where m is the mass of the particle and v is the velocity of the particle.
The rms-speed (v) of the molecules is given by the equation below.v = √[3kT/m] Where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of the molecule. We may change the temperature T by a factor of 2 to obtain the new rms-speed. The equation is given as follows:
V' = √[3k(2T)/m]=√2[3kT/m]. Therefore, the rms-speed increases by a factor of √2.
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