Q1. A spherical shell is heated. The volume changes according to the equation Vθ=V0(1+γθ). Does the volume refer to the volume enclosed by the shell or the volume of the material making up the shell or both?
Q2. Does the temperature of a body depend on the frame from which it is observed? If two bodies are in thermal equilibrium in one frame, will they be in thermal equilibrium in all frames?
Q3. When we place a gas cylinder on a van and the van moves, does the kinetic energy of the molecules increase? Does the temperature increase?
Q4. If the molecules were not allowed to collide with each other, would you expect more evaporation or less evaporation?
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3 Answers
33)the speed of the van can be neglected when we compard to the speed of the gas molecules.
1)m=k;
V increases and so density decreases which means the volume of the sphere increases with decrease in the density of the sphere
11 . volume of the material shell only
2.yes
3. as no relative motion between cyl and mol
4 will be less .
241) Considering isotropic expanison...volume will be of both
2) Temperature is defined in terms of internal energy of a system i.e in the center of mass frame. So there is no frame dependence.
3) Sankara is right
4) thinking[7][7]
