10 The densities of two substances are in the ratio 3:6 and their specife
heats are in the ratio 3:5 respectively. Compare the thermal enpacities
per unit volume.
11. wo iron balls A and B are in contact and the temperature of both the
balls is 40°C. Find the ratio of heat of ball A to that of the ball B, if mass
of ball A is twice the mass of ball B.
An iron ball of mass 100 g at 60°C is immersed in water of mass 500
g at 20°C. Calculate the final temperature of the system (iron ball +
water). Given specific heat of iron = 0.113 cal g1 °C and specific heat
of water is 1 cal g -1 °C-.
13. A metal plate of mass 200 g at 100°C is put in 300 g of water at 25°C.
If the final temperature is 30°C. Calculate the specific heat capacity of
the metal.
14. 200 g of water at 80°C is mixed with 100 g of water at 20°С. Find the
final temperature of the mixture:
Find the amount of heat required to convert 2 kg of ice at 0°C to water
at 40°C. Latent heat of fusion of ice is 335 x 103 J/kg. Specific heat of
water is 4186 J kg-1 °C-.
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