1. a metal ball with mass m1 = 4 kg is heated to a temperature of θ1 = 186.7 degrees celsius, after which it is introduced into a calorimeter of negligible caloric capacity and containing a volume v2 = 6 liters of water at θ2 = 10 degrees celsius. after establishing the equilibrium, the temperature of the system is θ = 20 degrees celsius. neglecting heat losses, the specific heat of the ball is present.

2. a nickel body with mass m1 = 0.8 kg and initial temperature θ1 = 950 degrees celsius is introduced into a vessel with mass m2 = 50 kg water at temperature θ2 = 16 degrees celsius. let the equilibrium temperature be found. losses of any kind are neglected.