Thursday 2 April 2015

FORM 4: 4.2 UNDERSTANDING SPECIFIC HEAT CAPACITY

HEAT CAPACITY
The heat capacity of a body is the amount of heat that must be supplied to the body to increase its temperature by 1 oC.

SPECIFIC HEAT CAPACITY, c
The specific heat capacity of a substance is the amount of heat that must be supplied to the increase the temperature by 1 oC for a mass of 1 kg of the substance.

APPLICATIONS OF SPECIFIC HEAT CAPACITY
COOKING POT










§   Copper has a smaller specific heat capacity.
§   Therefore, the copper base heats up very quickly.
§   The handle is made of a material which has a larger specific heat capacity.
§   Therefore, it will not become too hot even if heat is absorbed.

THE COOLING SYSTEM OF A CAR ENGINE















§         Water which has a high specific heat capacity is suitable to use as cooling agent in car radiator as it can absorb a large quantity of heat with little increase in temperature.

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