An ice cube has a temperature of -15.0°C The total thermal energy needed to raise the temperature of this ice cube to 0.0°C
and completely melt the ice cube is 5848 J
specific heat capacity of ice = 2100 J/kg ^*C
specific latent heat of fusion of ice = 334 000 J/kg

Calculate the mass of the ice cube.
(5 marks)

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.