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3 years ago

Which of the following statements most accurately differentiates potential and kinetic energy?

Physics

2 answers:

oksian1 [2.3K]3 years ago

8 0

A. Definitely this, because when I read this I exactly knew what it was, which I already did but..

lianna [129]3 years ago

8 0

Answer:

A. Any object that has motion has kinetic energy, while any object not in motion but with the potential to do work has potential energy.

Explanation:

Kinetic energy is associated to the motion energy in which object moves with certain speed.

It is given by the formula

$E_k = \frac{1}{2}mv^2$

Now similarly we can define potential energy as the energy stored in an object which is due to its position and the object must be at rest.

It may be of gravitational potential energy or spring potential energy or any other type

Gravitational potential energy is given as

$E_p = mgh$

both kinetic energy and potential energy is part of mechanical energy

so correct answer would be

A. Any object that has motion has kinetic energy, while any object not in motion but with the potential to do work has potential energy.

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A particle of mass m = 13 kg moves in space under the action of a conservative force. Its potential energy is given by PE = 2xyz

Helen [10]

Answer:

$F_{x}$ = -12 N , $F_{y}$ = -80 N and $F_{z}$ = - 44 N

Explanation:

The force is related to the potential energy by the formula

F = -Δ U = - ( $\frac{dU}{dx}$ i ^ + $\frac{dU}{dy}$ j ^ + $\frac{dU}{dz}$ k ^)

It indicates the potential energy

U = 2xyz + 3z² + 4yx + 16

To solve this problem let's make the derivatives, to find each component of the force

$\frac{dU}{dx}$ = 2yz + 0 + 4y + 0 = 2yz + 4y

$\frac{dU}{dx}$ = 2xz + 0 + 4x + 0 = 2xz + 4x

$\frac{dU}{dx}$ = 2xy + 3 2z + 0 +0 = 2xy + 6z

We look for the expression for the force in each axis

$F_{x}$ = - 2yz - 4y

$F_{y}$ = -2xz -4x

$F_{z}$ = -2xy -6z

We calculate at the point P = (20 i ^ + 1j ^ + 4 k ^) m

$F_{x}$ = - 2 1 4 - 4 1

$F_{x}$ = -12 N

$F_{y}$ = - 2 20 4 - 4 20

$F_{y}$ = -80 N

$F_{z}$ = - 20 1 - 6 4

$F_{z}$ = - 44 N

We put together the expression for strength

F = (-12 i ^ - 80j ^ -44k ^) N

5 0

3 years ago

What is the relationship between organ systems and organs? organs are made from one type of organ system organ systems are made

Artemon [7]

Organs are made up of different types of organs.

3 0

2 years ago

If the shoe has less mass, it will experience _______________ (more, less, the same) friction as it would with more mass.

Valentin [98]

More I’m pretty sure but no promises

4 0

2 years ago

A and B together can do 1 by 6 of a work in a day is 1 by 10 of the work in a day how much work can do in 1 day

Sophie [7]

Answer:

hih

Explanation:

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2 years ago

An ideal gas in a cubical box having sides of length L exerts a pressure p on the walls of the box. If all of this gas is put in

Anni [7]

Answer:

C). $P_2 = \frac{P}{64}$

Explanation:

As we know if temperature of the gas remains constant then

$P_1V_1 = P_2V_2$

now we will have

P = initial pressure due to gas

initial volume of the gas is

$V_1 = L^3$

now we know that side of the box is increased by 4 times

so new volume is

$V_2 = (4L)^3 = 64 L^3$

now we have

$P(L^3) = P_2(64L^3)$

now we have

$P_2 = \frac{P}{64}$

8 0

3 years ago