Which will require more energy, heating a 2.0 kg block of lead by 30 K or heating a 4.0 kg block of copper by 5 K? `(S_lead=128 J kg^-1 K^-1`, `S_copper = 387 J kg^-1 K^-1`)

The kinetic energy of 1 kg of oxygen at 300 K is 1.356 xx 10^6 J . Find kinetic energy of 4 kg of oxygen at 400 K.

Find thermal capacity for a copper block of mass 0.2 kg, if specific heat capacity of copper is 290 J//kg ^@C

A sphere of aluminium of 0.06 kg is placed for sufficient time in a vessel containing boiling water so that the sphere is at 100^@ C . It is then immediately transferred to 0.12 kg copper calorimeter containing 0.30 kg of water at 25^@ C . The temperature of water rises and attains a steady state at 28^@ C . Calculate the specific heat capacity of aluminium. (Specific heat capacity of water, s_w = 4.18 xx 10^3 J kg^(-1) K^(-1) , specific heat capacity of copper s_(Cu) = 0.387 xx 10^3 J kg^(-1) K^(-1) )

Find thermal capacity for a copper block of mass 0.2 kg, if specific heat capacity of copper is 290 J/kg ""^(@)C .

50 g of copper is heated to increase its temperature by 10^@C . If the same quantity of heat is given to 10 g water, the rise in its temperature is Specific heat of copper = 420 joule-kg^-1^@ C^-1 , Specific heat of water = 4200 joule-kg^-1^@ C^-1

What pressure is required to reduce the volume of a lead block by 1%. Given (Bulk modulus of lead = 6 xx 10^9 (S.I. Unit)

The work done when 1.6 xx 10^-2 kg of oxygen at 300 K are expanded isothermally and reversibly, till its volume is tripled is _________ .( R=8.314 J K^-1 "mole"^-1 )

Calculate the mass in grams of an impurity ofmolar mass 100 g mol^(-1) which would be required to raise the boiling point of 50 g of chloroform by 0.30 K (Kb for chloroform 3.63 K kg mol^(-1)) .

Solve the following examples: A body of mass 1 kg has kinetic energy 2 J. Find the velocity of the body.

When 0.1 kg of ice at 0 ^@C is mixed with 0.32 kg of water at 35 ^@C in a container. The resulting temperature of the mixture is 7.8 ^@C . Calculate the heat of fusion of ice (S_water = 4186 J kg^-1 K^-1)