3) Glycerin, a major component in soap, is heated before being poured into moulds. Calculate the mass of glycerin if 5.50X103 J of energy causes a 4.20oC temperature rise in its liquid state. (4 marks)
4) The sun heats 2.00X102 kg of ammonia gas that is kept at constant volume in a large tank. Assuming that solar radiation of 6.00X102 W caused the heating, determine the length of time it took to raise the ammonia’s temperature by 12oC. (6 marks)
5) Many satellites circle the Earth in elliptical orbits so that they are not always the same distance from the planet. A satellite in a stable elliptical orbit has a total mechanical energy which remains constant. At what point in the orbit would the speed of the satellite be the greatest? At what point the least? Explain your reasoning. (5 marks)