A mass m of lead shot is placed at the bottom of a vertical cardboard cylinder that is 1.5 m long and closed at both ends. The cylinder is suddenly inverted so that the shot falls 1.5 m If this procces is repeated quickely 100 times, auuming no heat is dissipated or lost, the temperature of the shot will increase by (specific heat of lead`=0.03 cal//g^@C`)

Practice problems : When 15 cal of heat is supplied to a gold coin of mass 5 g , what will be the rise in temperature of the coin ? ( specific heat of gold = 0.03 cal/g ⁰C)

A 150 cm long glass tube, closed at both ends, is filled with leads marbles up to a length of 30 cm. After how many inversions of the tube will the temperature of the lead marbles increase by 2^(@)C ? Specific heat of lead = 0.03 cal cdot g^(-1) cdot^(@)C^(-1) .

800 g lead balls are kept in a 1 m long, vertical tube which is a bad conductor and the tube is then closed at both ends. The tube is suddenly inverted so that the balls fall from one end to the other. The temperature of the lead balls increases by 3.89^(@)C after 50 such inversions. Find out the mechanical equivalent of heat assuming that the lead balls have retained the entire amount of heat produced.

A lead bullet of mass 21 g travelling at a speed of 100m//s comes to rest in a wooden block . If no heat is taken away by the wood , the rise in temperature of the bullet in the wood nearly is (specified heat of lead = 30 cal//kg^(@)C )

The water of mass 75 g at 100^(@)C is added to ice of mass 20 g at -15^(@)C . What is the resulting temperature. Latent heat of ice = 80 cal//g and specific heat of ice = 0.5 .

A piece of lead falls from a height of 100 m on a fixed non - conducting slab which brings it to rest . The temperature of the piece immediately after collision increase by ( specific heat of lead is 30.6 cal kg^(-10) C^(-1) and g= 9.8ms^(-2) )

Victoria falls is 68m high wht is the change in temperature of a drop if it falls that height if specific heat capacity is 1 cal/g deg C.

If a lead bullet hits a wall, its temperature rises by 200^(@)C . What is the speed of the bullet if the heat so produced remains completely in the bullet? Specific heat of lead = 0.03 cal cdot g^(-1) cdot^(@)C^(-1) .

A lead bullet of mass 10 g travelling at 300 m//s strikes against a block of wood and comes to rest. Assuming 50% of heat is absorbed by the bullet, the increase in its temperature is (Specific heat of lead = 150 J//kg^(@)C )