4. Estimate how much energy is required to heat the air in your physics laboratory from a chilly 10 "C to a more 3.1 Specific Heat Capacity Questions comfortable 20 *C. The density of air is 1.2 kg.m" You will need the following information; Specific heat capacities; Aluminium 900 Jkg 'K', Copper 385 Jkg 'K-1, Expanded polystyrene 1300 Jkg 'K 1, Iron and steel 450 Jkg 'K-', Ice 2100 Jkg 'K-1, Air 1000 Jkg 'K-1, Water 4200 Jkg 'K-1 Answer = Unit = 1. For each of the following, find the internal energy difference (40) for a 10 5. You can put your hand in an oven at 200 *C and even touch a baking cake,