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Determine by direct integration the moment of inertia of the shaded area with respect to the x axis.
A steam compressor receives H 2O at 90kPa and 75% quality at a rate of 50 kg/s. Part way through the compressor, steam is bled off at 20kg/s, 2MPa and 300C. The remainder exits the compressor at 10MPa, 500C. Assuming heat transfer and changes in po..
the hawkins supply company is currently faced with an inventory rotation problem.this difficulty stems from the fact
A constant-volume tank contains 5 kg of air at 100 kPa and 327°C. The air is cooled to the surroundings temperature of 27°C. Assume constant specific heats at 300 K.
solar energy is used to warm a large collector plate. this energy in turn is transferred as heat to a fluid in a heat
refrigerant 134a enters an insulated throttling valve at 140 lbfin2 and 80degf. the refrigerant exits the valve at 50
the 2 Mg car increases its speed uniformly from rest to 25 m/s in 30s up the inclined road. determine the maximum power that must be supplied by the engine, which operates with an efficiency of 0.8. also, find the average power supplied by the eng..
a piston-cylinder device contains 5 kg of r134a at 800 kpa and 60 c. the refrigerant is now cooled at constant pressure
refrigerant 134a is compressed at a steady state from 2.4 bar 32 f to 12 bar 50 celsius. the power input to the
For mass-spring-damper accelerometer, calculate the mass needed to achieve mechanical noise limit a_rms = 1 nG if the mechanical resonance frequency is to be f=100 Hz.
a thin metal plate is insulated on the back and exposed to solar radiation on the front surface. the exposed surface of
1 kg of steam occupies a volume of 0.2 m3 at 9 bar in a closed system. the steam is then heated at constant pressure
the lifetime of a lightbulb is normally distrbuted with a mean of 1000 hrs and a standard deviation of 30 hours. find the probability that a randomly selected light bulb last longer than 1045 hours.
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