A lead bullet weighing 20 g and moving with a velocity of `100 ms^(-1)` comes to rest in a fixed block of wood. Calculate the heat developed and the rise in temperature of the bullet assuming that the half of the heat is absorbed by the bulley. The specific heat of lead is `0.03 cal g^(-1).^(@)C^(-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) .

A bullet of mass 20xx10^(-3)kg enters into a fixed block of wood with a velocity of 100ms^(-1) and is brought to rest in the wood. Calclate the rise in temperature of te bullet if two -third of the heat produced is absorbed by the bullet. (Specific heat capacity of lead =32calkg^(-1)K^-1) and J=4.2J//"callorie" )

A lead bullet of mass 21g travelling at a speed of 100 ms^(-1) 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 (Sp. Heat of lead 80cal/kg .^(@)C )

A bullet of mass 4 g is fired with a velocity of 600 ms^(-1) into a block of metal weighing 9.996kg . The block is free to move. Calculate the common velocity of the bullet and block after the impact.

Calculate the change in internal energy when 5g of air is heated from 0^(@) to 4^(@)C . The specific heat of air at constant volume is 0.172 cal g^(-1) .^(@)C^(-1) .

A lead bullet strikes against a steel plate with a velocity 200ms^-1 . If the impact is perfectly inelastic and the heat produced is equally shared between the bullet and the target, thent he rise in temperature of the bullet is (specific heat capacity of lead =125Jkg^-1K^-1 )

A bullet of mass 5 g travelling with a speed of 210 m/s, strikes a fixed wooden target. One half of its kinetic energy is converted into heat in the bullt while the other half is coverted into heat in the wood. The rise of temperature of the bullet if the specific heat of its meterial is 0.030 cal/ (g - ""^@C) (1 cal = 4.2 xx 10^7" ergs") close to :

Calculate the resulting temperature when 20 g of boiling water is poured into an ice-cold brass vessel ("specific heat = 0.1 cal g"^(-1) .^(@)C^(-1)) of mass 100 g