A piston cylinder system is at room temperature (300K). The piston has a mass of 1000 kg equipped in 1- m high cylinder; cross sectional area 1 m2. Air with a volume of 0.5 m3 under the piston is heated so that the piston moves up. Find the total heat transfer to the air when the piston has been pushed up to the top end of the cylinder. (Rair = 0.287 kJ/kg-K)