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SPECIFIC HEAT CAPACITY

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shc
mhc

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Equi-partition Energy for solids

Question

A system of particles in equilibrium at absolute temperature T will have an average energy of ..............................  associated with each degree of freedom, in which kB is the Boltzmann constant

Answers

 ½ kBT

 kBT

 3 kBT

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Question

Each atom on a solid has both KE and PE with its vibrational motion. An oscillator in one dimension has
average energy of .................................

Hint

Vibrational motion has 2 modes

Answers

½ kBT

 kBT

3 kBT

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Question

An oscillator in three dimension has average energy of .................................

Answers

½ kBT

 kBT

3 kBT

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Specific heat capacity of water

Specific heat of water varies slightly with temperature

One calorie is defined to be the amount of heat required to raise the temperature of 1g of water from °C

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Mayer's Relation

Question

Cp is always greater than Cv and Cp - Cv = R. Choose the correct statements

Answers

When a gas is heated at constant pressure, internal energy is increased and work is done to maintain constant pressure

When a gas is heated at constant pressure, internal energy only is increased and  no work is done to maintain constant pressure

When a gas is heated at constant volume, internal energy is increased and work is done to maintain constant volume

When a gas is heated at constant volume, internal energy only is increased and no work is done  to maintain constant volume

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