A gas is contained in a vertical friction less piston

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Reference no: EM13549191

1.A pump of 80% efficiency lifts water from one large open tank to another; the difference in water surface elevations is 20 feet. The pipe is relatively smooth (f = 0.0122), and has 3 elbows, each with a loss coefficient of 2/3. The pipe is 4-inches in diameter and 40 feet long. The kinematic viscosity of water is 10-5 ft2/sec. What horsepower must be supplied to the pump in order to convey 2 CFS through the system? (Kent = .5) Assume a submerged exit.

a).7.8 HP

b).17.2 HP

c).26.5 HP

d).34.6 HP

2.A gas is containied in a vertical frictionless piston cylinder device. the piston has a mass of 20kg with a cross-sectional area of 20cm^2 and is pulled with a force of 100n. if the atmospheric pressure is 100kpa determine the pressure inside.

Reference no: EM13549191

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