Expression for heat capacity at constant pressure
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The ratio of the heat capacity at constant pressure to heat capacity at constant volume. The ratio of the amount of heat needed to raise the temperature of a unit mass of substance by a unit degree to the amount of heat needed to raise that of the same mass of water by the same amount.
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A heat capacity is the temperature change per unit heat absorbed by a system during a reversible process: . It is a poor name, since bodies don't contain heat, only energy, but we're stuck with it. (Note the difference between ``heat capacity'' and ``specific heat capacity''; the latter is the heat capacity per kg or per mole - the units will make clear which.)
The heat capacity is is different for different processes. Useful heat capacities are those at constant volume or constant pressure (for a fluid)
A heat capacity is the temperature change per unit heat absorbed by a system during a reversible process: . It is a poor name, since bodies don't contain heat, only energy, but we're stuck with it. (Note the difference between ``heat capacity'' and ``specific heat capacity''; the latter is the heat capacity per kg or per mole - the units will make clear which.)
The heat capacity is is different for different processes. Useful heat capacities are those at constant volume or constant pressure (for a fluid)
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