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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
Find the closed loop transfer function Gcl(s) = θL(s)/ θs(s) and determine the initial and final values of θL(t) for a step input θc(t).
A car accelerates uniformly rest to 81 ft/s over a distance of 700 ft along a curve of 800ft radius .Determine the magnitude of the total acceleration at the instant that speed of 81ft is reached.
a 1.0-m-diameter hollow sphere weight 200 n is attached to a solid concrete block weight 4.1 kn. if the concrete has a
a racing boat planes over the water at 80 mph. the water temperature is 75f. the wetted surface of the boat i.e. the
an automobile can accelerate at the rate of 1.5ms2 and can decelerate at 7ms2. if driver never exceeds the speed limit
a pressure vessel made of aluminum alloy 2024-t351 sy 325 mpa and kc 36 mpa-m12 is manufactured for a safety factor
water flows near a flat surface and soe measurments of the water velocity u parallel to the surface at different
if members ac and ab can support a maximum tension of 300 lb and 250 lb respectively determine the largest weight of
consider a steam rankine cycle with superheat. the maximum temperature and pressure are 540 c and 60 bar and the
the rigid tank illustrated in the figure has a volume of 0.06 m3 and initially contains a two-phase liquid-vapor
a mass of 15kg of air in a piston-cylinder device is heated from 25 to 77 degrees c by passing current through a
problem 1a steel simple beam ab is supported by a copper wire at the middle point c. the beam is subjected to a pair of
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