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Two persons A and B weighing 141 and 182 lb, respectively, jump off a floating platform (in the same direction) with a velocity relative to the platform that is completely horizontal and with a magnitude of Vo = 6.4 ft/s for both A and B. The floating platform weighs 846 lb. Assume that A, B and the platform are initially at rest. Neglecting the water resistance to the horizontal motion of the platform, and knowing that A jumps first, determine the speed of the platform after A and B have both jumped.
a 600 mw coal-fired power plant has an overall thermal efficiency of 38. it is burning coal that has a heating value of
a centrifugal compressor used in a gas turbine engine increases the pressure of 2000 lbmmin of air from 15 psia to 150
A power outage occurred at a water distribution pump station. Before the power outage the station was pumping with one pump at 6,000 gpm in a 18" diameter Steel Pipe
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a 70 kg boy stands on the edge of a stationary 100 kg platform the platform is on frictionless rollers. suddenly he
A vessel with a volume of 0.0011 m3 is filled with dry saturated steam at a pressure of 95 kPa. It is then sealed and cooled to 250C. Determine the amount of heat that must be removed.
a ship channel has a depth of 16 m and an upper width of 16 m. the sides of the channel are curved such that the width
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a fan with 1-m-diameter blades moves air at 20degc at sea level. the fan produces a volumetric flow rate of 942 m3min.
a certain kind of brick has a density of 2000kgm3 and a compressive strenght of 40mpa. what is the highest vertical
the engine of an automobile supplies 180 hp at 2500 rpm to the drive shaft. if the maximum shearing stress in the drive
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