Heat numericals for XII year Q.1 Q.2 (c) 1200 J (🔺️Q) of heat energy is supplied to the system at constant pressure. The intermal energy of the system is increased by 750J (🔺️U) and the volume by 4.5 cubic meters (🔺️V), Find the work done (🔺️W) against 1200] (AQ) of heat energy is supplied to the system at constant pressure. The internal energyof the system is increased by 750] (AU) and the volume by 4.5 cubic meters (AV). Find the work (4) d on e (AW =?) against piston and the pressure (P =?)onthe piston. P=? AW =?, Hint- AQ = 1200/,AU =750,AV = 45m®, (i) (ii) AQ = AU + AW @ = 1200 = 750 + AW = AW = 1200 — 750 = [AW =450] AW = PAV = 45 0=Px 45 450 p Sp =—— 4.5 = |P = 100 N/m? 1994 (4507, 100 N/m?) A meter bar (Lo, = 1m) of steel is at 0°C (T, = 273 K) and another meterbar(Lo,=1m)isat -2.50C (T/ = 270.5 K). Wh at will be the difference between t...