How much heat is emitted when a body of mass 200g cools from 37^oC to 31^oC? (specific heat capacity of the body = 0.4Jg^-1K^-1,)

If the cubic expansivity of brass between 27^oC and 100^oC is 5.7 x 10^-5K^-1, What is its linear expansivity?

Air at temperature 527^oC and pressure 30 atmospheres is admitted into the cylinder of an engine. Calculate the pressure of the gas when it has expanded to 5 times its volume and cooled to 127^oC as it leaves the engine

The inside of a vacuum flak is usually coated with silver to reduce heat loss by

Dry oxygen is trapped by a pellet of mercury in a uniform capillary tube which is sealed at one end. The length of the column of oxygen at 27^oC is 50cm. if the pressure of the oxygen is constant, at what temperature will the length be 60cm?