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A scuba diver descends to 40 meters below the surface and has a 10 liter tank that contains air at 9 MPA and 7 C. Assume that the water has a density of 1000kg/m^3 and that atmospheric pressure is 100 KPA. He breathes at 5/ liters/min. How long can he stay a the 40 M depth.
consider the case of a knife whose leading edge is the z-axis and the blade covers the half plane defined by x 0.
in a steam generator compressed liquid water at 1500 psi 100of enters a 1-in diameter tube at the rate of 5 ft3min.
the volume of 1.5 kg of helium in a piston-cylinder device is initially 9 m3. now the helium is compressed to 5 m3
in an orthogonal cutting operation the chip velocity was determined using a laser doppler velocimeter ldv as 80 of the
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of H2O at 200 lbf/in^2 with a quality of 80%. The mixture is heated and expands at constant pressure until a final temperature of 480 F is reached. Determine the work for the proces..
a spare pressure vessel flange bolt is discovered inside the reactor shroud during a refueling outage of a nuclear
consider a reheat cycle with steam leaving the boiler and entering the turbine at 4 mpa and 400 c . after expanded in
an ice-making plant working on a reversed carnot cycle heat pump removes 3.5kw heat from the ice which is maintained at
a heat-engine of 32 thermal efficiency is used to drive a refrigerator having coefficient of performance of 5.
a 10-kg mass of r-134a at 1.2 mpa and 70 c is cooled at constant pressure until it reaches a temperature of 20 c.
A compressor is employed to compress gas flowing steadily through it. The gas enters the compressor at a temperature of 16°C, a pressure of 100 kPa, and with an enthalpy of 391.2 kJ/kg. The gas leaves the compressor at a temperature of 245°C, a pre..
the rotor shaft of a helicopter drivesd the rotor blades that provide the lifting force and is subjected to a
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