The mechanical equivalent of heat J is

The mechanical equivalent of heat is 4.2 xx 10^(7) erg cdot cal^(-1) . What does it mean?

The unit of mechanical equivalent of heat J is _____ .

5g of a gas is contained in a rigid container and is heated from 15^@C to 25^@C . Specific heat capacity of the gas at constant volume is 0.172 cal g ^(-1)^@C^(-1) and the mechanical equivalent of heat is 4.2 J cal . Calculate the change in the internal energy of the gas.

5g of a gas is contained in a rigid container and is heated from 15^@C to 25^@C . Specific heat capacity of the gas at constant volume is 0.172 cal g ^(-1)^@C^(-1) and the mechanical equivalent of heat is 4.2 J cal . Calculate the change in the internal energy of the gas.

5g of a gas is contained in a rigid container and is heated from 15^@C to 25^@C . Specific heat capacity of the gas at constant volume is 0.172 cal g ^(-1)^@C^(-1) and the mechanical equivalent of heat is 4.2 J cal . Calculate the change in the internal energy of the gas.

Take the mechanical equivalent of heat as 4J // cal. A 10-gram bullet moving at 2000 m//s plunges into 1 kg of paraffin wax ( specific heat 0.7 cal // ( g^(@) C ) . The wax was initially at 20^(@)C . Assuming that all the bullet's energy heats the wax, its final temperature is

The mechanical equivalent of heat (1) has the same dimensional formula as heat (2) has the same dimensional formula as worked (3) has the same dimensional formula as energy (4) is dimensionless

Why is Joule's constant called the mechanical equivalent of heat ?

What is value of Joule’s mechanical equivalent of heat J?