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3 years ago

For an isothermal process, the work done by or on a system of ideal gas is equal to the change in what?

Physics

1 answer:

morpeh [17]3 years ago

5 0

Explanation:

The equation for work done by a system is as follows.

$\Delta U = Q - W$

where, $\Delta U$ = change in internal energy

Q = heat absorbed or released by the system

W = work done by the system

Since it is given that it is an isothermal process. Therefore, $\Delta T = 0$ .

Whereas internal energy depends on temperature and as there is no change in temperature so, there will be no change in internal energy of the system.

Hence, the equation will be as follows.

$\Delta U = Q - W$

0 = Q - W

Q = W

Therefore, we can conclude that for an isothermal process, the work done by or on a system of ideal gas is equal to the change in Q.

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Correct answer: D

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3 years ago

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A swinging pendulum has a total energy of <img src="https://tex.z-dn.net/?f=E_i" id="TexFormula1" title="E_i" alt="E_i" align="a

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Answer:

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For small oscillations, the equation can be re-arranged into the following form:

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If the amplitude of pendulum oscillations is increase by a factor of 4, the angle of oscillation is $4\theta$ and the total energy of the pendulum is:

$E_{2} \approx m\cdot g \cdot (1-4\theta)\cdot L$

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3 years ago

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snow_lady [41]

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Option 1 is wrong because there are 2 protons and 2 neutrons in nucleus.

Option 3 is wrong because there are two electrons moving around nucleus.

Option 4 is wrong because electrons are negatively charged and are moving around the nucleus.

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3 years ago

A cat jumps from 2.5-meter-tall bookshelf to a 1.3-meter-tall countertop. If the cat

UkoKoshka [18]

The change in Potential energy of the cat is 176.4 J.

<h3 /><h3>Potential Energy:</h3>

This is the energy due to the position of a body. The S.I unit is Joules (J)

The formula for change in potential energy.

<h3 /><h3>Formula:</h3>

ΔP.E = mg(H-h).............. Equation 1

<h3>Where:</h3>

ΔP.E = Change in potential energy
m = mass of the cat
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H = First height
h = second height.

From the question,

<h3>Given:</h3>

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Substitute these values into equation 1

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Hence, The change in Potential energy of the cat is 176.4 J

Learn more about Potential energy here: brainly.com/question/1242059

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