A wire of length 1.70m hungs vertically from a fixed point. The wire has a cross section area 5.74 ×10 and is made of a meterial that has a young modulus of 1.60×10 .A load of 25 N is hung from the wire

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)