A 500 gm metal piece at 300°C is dropped in 5 kg of water. Its temperature raises from 30°C to 75°C. If there are no heat losses and system is at equilibrium, calculate the specific heat of metal piece. (Specific heat of water = 4.2 J/g °C)
1
1.5 kJ/kg °C
2
2.4 kJ/kg °C
3
8.4 kJ/kg °C
4
4.8 kJ/kg °C