(a) Dene heat and temperature. (b) Convert 428.6 \"F to the Celsius scale. (c) The temperature of 200 g of water decreases from 20 \"C to 0 C in 10 minutes. Calculate i. the heat lost by the water. ii. the rate at which the water is losing heat. iii. the time taken for the water at 0 C to turn completely into ice. (d) A 20 kg brick stands upright on the ground as shown. What is the pressure it exerts on the ground? 20001 San O 100"