A person weighing 50 kg takes in 1500 kcal dict per day. If this energy were to be used in heating the body of person without any losses, then the rise in his temperature is ( specific heat of human body `= 0.83 calg^(-1)C^(-1)`)

A person weighing 60 kg takes in 2000 kcal diet in a day. If this energy were to be used in heating the person without any losses, his rise in temperature would be nearly (Given sp. Heat of human body is 0.83 cal g^(-1), .^@C^(-1)

50 gm of copper is heated to increase its temperature by 10^(@)C. If the same quantity of heat is given to 10 gm of water, the rise in its temperature is (Specific heat of copper =420 Joule-kg^(-1)@C^(-1)

A body of mass 5 kg falls from a height of 20 metres on the ground and it rebounds to a height of 0.2 m. If the loss in potential energy is used up by the body, then what will be the temperature rise? ("specific heat of material = 0.09 cal gm"^(–1@)"C"^(–1))

Certain amount of heat is given to 100 g of copper to increase its temperature by 21^@C . If same amount of heat is given to 50 g of water, then the rise in its temperature is (specific heat capacity of copper = 400 J kg^(-1) K^(-1) and that for water = 4200 J kg^(-1) K^(-1))

A body of mass 25 kg is dragged on a horizontal rough road with a constant speed of 20 kmh^(-1) . If the coefficient of friction is 0.5, find the heat generated in one hour. If 50% of the heat is absorbed by the body, find the rise in temperature. Specific heat of the material of the body is 0.1 cal g^(-1).^(@)C^(-1) .

Find the heat energy required to raise the temperature of 5 kg of water at 80^@C to 100^@C . (Specific heat of water is 1 cal g^(-1)""^(@)C^(-1) )

A lead block of mass 2 kg is supplied with a heat energy of 3600 J. Calculate the rise in temperature, if the sp. heat capacity of lead is 130 J kg^(-1) C^(-1) .

Find the heat energy required to boil 5 kg of water iff its initial temperature is 30^(@)C (specific heat of water is 4200 J kg^(-1)" "k^(-1) and boiling point is 100^(@)C )

In a container containing 0.2 kg of water at 40^@C , 0.2 kg of ice at 0^@C is mixed. Calculate the heat of fusion of ice if the resulting temperature is 5.5^@C . Take, Specific heat of water = 4186 J kg^(-1)K^(-1)

A lead bullet strikes a target with a velocity of 500 ms^(-1) and the bullet falls dead. Calculate the rise in temperature of the bullet assuming that 40% of the heat produced is used in heating the bullet. Given specific heat of lead = 0.03 cal g^(-1).^(@)C^(-1), J = 4.2 J cal^(-1) .