During summer, the balance wheel of a clock expands.what effect does this have on the accuracy of the clock?

A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is?

An electric heater rated 220v, 1000 w is immersed into a bucket full of water, calculate the mass of water if the temperature changes from 30°c to 100°c and the current flows for 300seconds.

[specific heat capacity of water = 4200 jkg-1 K-1]

If the pressure of the vapor on top of an enclosed liquid is equal to the atmospheric pressure, what will be the temperature of the liquid enclosed?

A heating coil rated 1000 W is used to boil off completely 2 kg of boiling water. The time required to boil  the water is?

[Special latent heat of Vaporization of water = 2.3 x 10\(^6\) Jkg-1]