- #1

beterban

- 8

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HI,

I have some question i hope i can fine the answer here:

1) is it possible for two bodies to be in thermal equilibrium without being in physical contact?explain

2)an ideal gas expands to twice its volume under isothermal and adiabatic conditions. in which case is the final temperature the highest? in which case is the change in internal energy greatest?

3)an aluminium foil has one shiny surface and one dull surface. how would you wrap the potato to bake it efficiently? explain

4)how much heat is needed to convert 80g of ice initially at-10 C to 60g of water and 20g of steam at 100 C?

specific heat capacity of ice=2100 JKg-1K-1, specific heat capacity of water= 4190 JKg-1K-1, latent heat of fusion of ice=334 kJkg-1, latent heat of vapourisation of water=2260 kJkg-1

thanx in advance

I have some question i hope i can fine the answer here:

1) is it possible for two bodies to be in thermal equilibrium without being in physical contact?explain

2)an ideal gas expands to twice its volume under isothermal and adiabatic conditions. in which case is the final temperature the highest? in which case is the change in internal energy greatest?

3)an aluminium foil has one shiny surface and one dull surface. how would you wrap the potato to bake it efficiently? explain

4)how much heat is needed to convert 80g of ice initially at-10 C to 60g of water and 20g of steam at 100 C?

specific heat capacity of ice=2100 JKg-1K-1, specific heat capacity of water= 4190 JKg-1K-1, latent heat of fusion of ice=334 kJkg-1, latent heat of vapourisation of water=2260 kJkg-1

thanx in advance

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