Please Answer the following quesrions. Please do all , and dont skip any questio

ID: 113042 • Letter: P

Question

Please Answer the following quesrions. Please do all , and dont skip any questions. the questions have muitple choices .

If a bunch of atoms are in thermal equllbrium, then that means that:

A. Many more atoms are produced

B. There must be lots of photons also

C. It's just a matter of time before the atoms settle down to have a temperature of absolute Zero

D. They all roughly have the same energy

If gas is in the thermal equllibrium and the voulme its contained in expands, we expect the temperature to

A. Decrease

B. Stay the same

C Not enough information to determine

What is hitting you when you are outside?

A. Photons

B. Protons

C. Electrons

Which of the following is not true

A. All of the distant galaxies is red-shifted

B. We are in the center of the explosion

C. The farther away the galaxy is , the faster it is moving

1) D

Because in thermal equilibrium condition there won't be any heat flow between atoms . So they will be having equal energy.

2)A

We have equations PV= nRT

When volume increases pressure decrease, pressure is directly proportional to temperature. So pressure decreases, temperature decreases.

3) A

Lights are small packets of energy known as photons.

4)A

Because red travel more distance than blue, while blue get scattered away. So distant galaxies are seen as red .

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