A 10 kW drilling machine is used to drill a bore in a small aluminium block of mass 8.0 kg. How much is the rise in temperature of the block in 2.5 minutes, assuming 50% of power is used up in heating the machine itself or lost to the Surroundings. Specific heat of aluminium= 0.91 J g^(-1) K^(-1).

A 10 kW drilling machine is used to drill a bore in a small aluminium

1.	A 10 kW drilling machine is used to drill a bore in a small aluminium block of mass 8.0 kg. How much is the rise in temperature of the block in 2.5 minutes, assuming 50% of power is used up in heating the machine itself or lost to the Surroundings. Specific heat of aluminium= 0.91 J g^(-1) K^(-1).
Answer» SOLUTION :`103 ^(@) C`