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A piston-cylinder assembly contains Ammonia initially at a pressure p = 500 kPa and specific volume v = 0.24533 m^3/kg (state 1). Expansion occurs to a state where the pressure is 150 kPa (state 2). During the process the pressure and specific volume are related by pv=constant. For the Ammonia, determine the work and heat transfer per unit mass, each in kJ/kg
when the 35-kg cylinder is released from rest the spring is subjected to a tension of 75 n.a determine the speed of the
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a dynamics student is called on to investigate a two-car collision. its known that car a struck car b. mass of car a is
the annual growth rate of energy utilization in the world was 2.5 per year in 2011. how long would it take to consume
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