A girl is bouncing on a trampoline where is her gravitational potential energy a maximum and where is her kinetic energy maximum

Answers

Answer 1

Answer:

When you jump down, your kinetic is converted to potential energy of the stretched trampoline. The trampoline's potential energy is converted into kinetic energy, which is transferred to you, making you bounce up. At the top of your jump, all your kinetic energy has been converted into potential energy. Right before you hit the trampoline, all of your potential energy has  been converted back into kinetic energy. As you jump up and down your kinetic energy increases and decrease.


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Answer fast, please.


Answers

D bomb b j de violence

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For the girl to lift this rock, she must push her end down _____ to raise the rock _____.

A. a lot; a little
B. a little; a lot
C. a little; a little

Answers

Answer:

A is the correct answer

Explanation:

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At what point in a waterfall, do the drops of water contain the most gravitational potential energy?

Answers

Answer:

The water above receives energy as it falls down the short waterfall. This energy was stored as potential energy in the gravitational field of the Earth and came out of storage as the water dropped. This energy which came out of the gravitational field ended up being expressed as the kinetic energy of the water. That is, the water gains kinetic energy as it drops. An ounce of water is going faster when it hits the bottom of the waterfall than it was when it went over the top of the waterfall

Explanation:

The drops of water contain the most gravitational potential energy at the top before they start falling.

At the top of the waterfall

Gravitation

At the top of the waterfall, the water drops have the most gravitational potential energy before they start falling as the water at the peak of the waterfall is higher in the Earth's gravitational field and has gravitational potential energy. The potential energy is converted to kinetic energy when it falls. As a result, energy is not created; it was always there, stored as potential energy.

Potential energy is energy that is stored and is determined by the relative positions of various pieces of a system. Kinetic energy is the energy that an item or particle has as a result of its movement.

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Describe the relationship between the direction of the velocity vector and the direction of the acceleration for a body moving in a circle at constant speed.

Answers

Velocity is a vector and has a direction. The direction of an object's velocity is always in the same direction that the object is moving. For an object moving in a circle at constant speed, the velocity vector is always directed in a direction which is tangent to the circle.

A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot potential of kinetic?

How much energy does the flowerpot have?

Answers

Answer:

It is Potential and corresponding to

90

J

.

Explanation:

Potential Energy is energy stored in the system and ready (potentially) to be changed into, say, Kinetic Energy through movement.

The general expression for Gravitational Potential Energy is:

U=mgh

where:

mg is the weight; h is the height relative to a certain reference level (the ground in this case) choosen to have zero Potential Energy.

With your data we get:

U=3⋅30=90J

When a current flows through a light bulb, it emits 30 J light energy in 2 seconds, What is the power of the bulb?

Answers

I believe the answer is P= 15w

The power of the light bulb is 15 watts.

What is power ?

Power in physics is defined as the rate of energy per unit time or in other words the work done by any electrical appliance per unit time. Power is expressed as -

P = E/T where E is Energy and T is the time period.

How to calculate the value of power in the question ?

Given that the light bulb emits 30 J light energy in 2 seconds.

We have E = 30J and T = 2 seconds.

Therefore power(P) = Energy(E) / Time(T)

∴  P = 30 / 2 = 15 watts

Thus the power of the light bulb is 15 watts.

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A car veers off course and runs straight into a brick wall. This is an example
of which of the following?
A. long time, large force
B. long time, small force
C. short time, small force
D. short time, large force

Answers

Short time large force

Answer:

Short time large force


In a nuclear fusion reaction, the mass of the products is _____ the mass of the reactants.

Answers

Answer:

more than

Explanation:

In a nuclear fusion reaction, the mass of the products is more than the mass of the reactants.

A TV draws 0.867 A of current when connected to a 122 V outlet. It’s resistance is 140.71.
A.)How many electrons pass through the TV per minute?
B.)How much electrical energy does the TV convert to other forms of energy
per minute?

Answers

Answer:

Explanation:

current measures charge flowing per second .

A current of .867 A means charge of .867 coulomb is flowing per second

charge flowing per minute = .867 x 60

= 52.02 coulomb

one electrons carries a charge of 1.6 x 10⁻¹⁹ Coulomb

So no of charge flowing per minute

= 52.02 / 1.6 x 10⁻¹⁹

= 32.5 x 10¹⁹ .

B )

electrical energy consumed per minute

= V X I X t , V is volt , I is current and t is time .

= 122 x .867 x 60

= 6346.44 J .

Static electricity is an excess of neutrons.
A True
B. False

Answers

The answer is false

Answer: Static electricity is an excess of neutrons-FALSE

Explanation:

A P E X

(05.03 MC)

The color of four stars is shown in the table below.



Color of Stars
Star Color
W Yellow
X White
Y Blue
Z Orange
What is the correct order of the surface temperature of the stars, starting from the highest to the lowest?

Group of answer choices

Y, Z, W, X

X, W, Z, Y

Y, X, W, Z

Z, W, X, Y

Answers

Answer:

C is correct

Explanation:

The order of the surface temperature of the stars, starting from the highest to the lowest is Y > X > W > Z.

What is Wien's displacement law ?

Wien's displacement law states that, the black-body radiation curve for different temperatures will have different peaks of wavelengths and the wavelength is inversely proportional to the surface temperature.

Here,

According to Wien's displacement law,

The wavelength of the star is inversely proportional to its surface temperature.

λ [tex]\alpha[/tex] 1/T

where T is the surface temperature.

Therefore, the star with lowest wavelength will have the highest surface temperature.

Consider the wavelengths of each stars given,

The increasing order of their wavelengths can be written as,

λ(Orange) > λ(Yellow) > λ(White) > λ(Blue)

Therefore the increasing order of their surface temperatures will be,

T(Blue) > T(White) > T(Yellow) > T(Orange)

Hence,

The order of the surface temperature of the stars, starting from the highest to the lowest is Y > X > W > Z.

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Anand gets into an elevator and travels 50 m straight up in a time of 5 s. He then travels in the opposite direction, straight down, for 70 m in a time of 6 s. What is his average speed and velocity, respectively, over the 11 s period?

A. 10.9 m/s, 1.82 m/s
B. 10.9 m/s, −1.82 m/s
C. 21.8 m/s, 10.9 m/s
D. −10.9 m/s, 5.2 m/s

Answers

Answer:

10.9 m/s, −1.82 m/s

Explanation:

We have,

Anand gets into an elevator and travels 50 m straight up in a time of 5 s. He then travels in the opposite direction, straight down, for 70 m in a time of 6 s.

Total time of journey is 11 seconds.

Total distance is 50 m + 70 m = 120 m

Total displacement is 50 m - 70 m = -20 m

Average speed, [tex]s=\dfrac{120\ m}{11\ s}=10.9\ m/s[/tex]

Average velocity, [tex]v=\dfrac{-20\ m}{11\ s}=-1.82 \ m/s[/tex]

So, the correct option is (b) 10.9 m/s, −1.82 m/s.

_____________ radiation is the least harmful type of radiation.

Alpha

Beta

Gamma

Answers

Explanation:

Alpha radiation is the least harmful type of radiation.

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Alpha radiation is the least harmful type of radiation

how does force do positive work on an object?​

Answers

Answer:

It can do work on an object by moving it or changing it.

Explanation:

Brainliest?

Answer:

If you push on an object, thats positive work but if you pull on the object, thats negative work

Explanation:

The distance from the maximum disturbance to the undisturbed position is the____ of a wave

Answers

Answer:

The amplitude of a wave is its maximum disturbance from its undisturbed position

Which are descriptions of gravity on Earth? Check all that apply.

an attractive force
a repulsive force
a noncontact force
a contact force
a horizontal force
a vertical force

Answers

Answer:

an attractive force

a noncontact force

a vertical force

Explanation:

Gravitational force is a NON-CONTACT FORCE. Gravitational force acts on all bodies on the earth that have mass. The force which is exerted through weight acts on the center of gravity of the body. The force is directed towards the center of the earth. The weight of a body is the gravitational force exerted by the earth on the body.

A,C,F.

Explanation: Got it correct.

Pretend you are explaining to a friend an object's energy can change depending on the position of the object. Use details from the text to help you write your conversation below.

The text is the picture


I WILL MARK YOU AS BRAINLIEST ​

Answers

Answer:

sorry, need better iinformation

Explanation:

.

Answer:

i am confused

Explanation:

Which factors affect the speed of ocean waves?

Answers

Answer:

The speed of all ocean waves is controlled by gravity, wavelength, and water depth. Most characteristics of ocean waves depend on the relationship between their wavelength and water depth. Wavelength determines the size of the orbits of water molecules within a wave, but water depth determines the shape of the orbits

Explanation:

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the magnification priduced by a spherical mirror is +1/4.what type of image is formed?

Answers

Explanation:

As the magnification is positive , thus the image formed is inverted and real

What is the velocity of a wave that has a frequency of 400 Hz and a wavelength of 0.5 meters?

Answers

Answer:

4.2

Explanation:

Somebody can tell me what answers it is?

Answers

Answer:

D

Explanation:

The color you see is the color the object reflectes. The rest of the color are absorbed by that object.

Isn’t it all colors are absorbed except red? OK I’M NOT THE BRIGHTEST SO

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how is work related to potential and kinetic energy?

Answers

Work is related to potential and Kinetic because your doing something which is working

When tectonic plates are strained to the point that they can no longer bend, which of the following is most likely to occur?

A. Earthquake
B. Volcanic Eruption
C. Convection Current
D. Ocean Basin Formation

Answers

The answer to your question is A

When tectonic plates are strained to the point that they can no longer bend, (A) earthquake most likely to occur.

What is earthquake?

An earthquake is the sudden release of energy from the earth's crust that causes the earth's surface to shake. Seismic waves, also called S waves, are consequently produced. The type and severity of an earthquake are based on the local seismic activity.

What is Volcanic Eruption?

A volcanic eruption occurs when elements of the Earth, such as hot lava, rocks, and dust, erupt from a volcano in the form of an explosion. The upper portion of the volcano or one of the side branches may explode. If massive volumes of rock and volcanic ash begin to erupt, it might be dangerous. Occasionally, numerous lives are lost in these explosions.

When tectonic plates are strained to the point that they can no longer bend, in such scenario, earthquake is most likely to occur.

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Which electromagnetic radiation can be seen with the human eye?

ultraviolet rays and visible light

infrared rays, visible light, and ultraviolet rays

visible light

visible light and X-rays

Answers

Answer:

Visible light

Explanation:

Answer:

C visible light

Explanation:

When a ball is tossed upward, along the way
A. the amount of kinetic energy and the amount of potential energy change
B. all of its energy is lost to friction with the air, and both kinetic and potential energy are zero at the highest point of travel.
C. its potential energy decreases and reaches zero at the highest point of travel D. its total energy increases and is at a maximum at the highest point of travel

Answers

Answer:

A

Explanation:

going upward, kinetic energy decrease and potential energy increase

Answer:

A

Explanation:

As a ball is thrown into the sky, potential energy increases and kinetic energy decreases. But, the mechanical energy ( that is the sum of the potential and kinetic energy) remains the same....

When an atom in a reactant loses electrons, what happens to its oxidation number?
A. Its oxidation number decreases
B. Its oxidation number doubles.
C.Its oxidation number increases.
D.Its oxidation number increases by one.
E. Its oxidation number stays the same.

Answers

It would be e because Reduction happens when an element gains electrons; in this case, its oxidation number is lowered. For example, when iron rusts, oxygen can behave as an oxidizing agent. As the oxygen gains electrons, it changes from an oxidation number of zero to an oxidation number of negative two.

A negative test charge experiences a force to the right as a result of an electric field. Which is the best conclusion to draw
based on this description?
The electric field points to the left because the force on a negative charge is opposite to the direction of the field,
The electric field points to the right because the force on a negative charge is in the same direction as the field,
No conclusion can be drawn because the sign of the charge creating the field is unknown,
No conclusion can be drawn because the amount of charge on the test charge is unknown.

Answers

Answer:a

Explanation:

Answer: ( A )

Explanation: the answer is a

Please help.
To which 2 systems does the heart belong:
A. Circulatory system and Respiratory system
B. Circulatory system and Muscular system
C. Circulatory system and digestive system
D. Circulatory system and Reproductive system

Answers

Answer:

A

Explanation:

circulatoy system and respiratory

Answer:

A

Explanation:

;3

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When tectonic plates are strained to the point that they can no longer bend, which of the following is most likely to occur?

A. Earthquake

B. Volcanic Eruption

C. Convection Current

D. Ocean Basin Formation

Answers

The answer to you’re is A

What happens to inertia as you increase the mass?

Answers

Inertia is the property of mass that resists change. As the mass of an object increases so does its inertia.
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