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A hovercraft has a square planform, a mass of 1.8 kg, and has a plenum pressure requirement of 125 Pa. A levitation fan has been selected that delivers this pressure at a flowrate of 0.032 m3/s. What is the resulting gap height (in mm)? Assume the density of air is 1.19 kg/m3.
The formula for the coefficient of performance 'COP' for air standard refrigeration cycle when we use cold air properties is not given in the text. Derive the expression for COP as function of the compression ratio similar to how the ideal Brayton..
A cooking pan whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the local atmospheric pressure is 101 kPa, determine the temperature at which the water starts boiling when it is heated.
homebuilding has undergone significant advances in the last 20 years due largely to replacement of hand tools hammers
What happens to the cutting and thrust force as tool rake angle and cutting speed are increased and what is the relation between the cutting and thrust forces to the depth of cut?
Determine a) the volume of the tank,b)the final temperature and pressure, and c) the internal energychange of the water.
it is proposed to improve the takeoff performance of a single-engined aircraft fitted with a 50-in-diammeter propeller
A 0,5Kg mass attached linear spring suffress 01 N/m. Determine be naturak frequency of the system in hortz e reapert this calculation for a mass of 50Kg and a suffress of 10N/m and compare your result to that of part.
a piston-cylinder assembly contains 1kg of water initially occupying a volume of 0.5m3 at 1bar. energy transfer by heat
a projectile is launched with a speed v0 27.0 ms from the floor of a 4.3-m-high tunnel as shown. determine the maximum
cylinder containing ch4 c2h6 and n2 has to be prepared in which the ratio of the moles of ch4 to c2h6 is 1.3 to 1.
A 0.7-lb block rests on top of a 0.5-lb block supported by but not attached to a spring of constant 9 lb/ft. The upper block is suddenly removed. Determine (a) the Maximum velocity reached by the 0.5-lb block, (b) the maximum height reached by the..
air enters a compressor operating at steady state with a pressure of 1 bar a temperature of 20degc and a volumetric
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