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Four pounds of air is compressed in a cylinder-piston arrangement while the temperature remains constant at 70°F. If the initial pressure is 30 psi absolute, calculate the work needed to compress the air such that the absolute pressure doubles. Also calculate the heat transfer.
Air enters the compressor of a gas-turbine plant at ambient conditions of 100 kPa and 32 °C with a low velocity and exits at 1 MPa and 367 °C with a velocity of 6 x 10^3 m/min. The compressor is cooled at a rate of 1800 kJ/min, and the power input to..
A stream of humid air containing 1.00 mole % H2O(v) and the balance dry air is to be humidified to a water content of 10.0 mole % H2O. For this purpose, liquid water is fed through a flow meter and evaporated into the air stream.
a satellite in earth orbit has a mass of 108 kg and is at an altitude of 1.99 106 m.a what is the potential energy of
Determine the equation for S as a function of θ for each type of motion. These equations should be written so that the displacement measured from the zero position can be calculated for any cam angle by use of the proper equation.
A voltage signal consists of a pure sine wave of amplitude 10.0 V at 180 Hz. This signal is sampled digitally at a sampling frequency of 200 Hz. 128 data points are taken.
What is the rate of heat transfer to the coolant, and what is the rate at which steam is condensed at the surface?
a pontoon of constant rectangular cross section is 50 m long 10 m wide and 5 m in depth. it floats in sea water at a
saturated ammonia vapor at 30 degree in celcius is passed over 30 vertical flat plates each of which is 10 cm high and
The answer is no, and the reason is that mutual inductances must exist between stator phases as given by (7.9-6). To show this, take a two-pole,
air at 35c 1 atm and 50 relative humidity enters a dehumidifier operating at steady state. saturated moist air and
a rocket of initial mass m0 including shell and fuel is red vertically at time t 0. the fuel is consumed at a constant
a gas contained within a piston-cylinder assembly undergoes three processes in series taking the gas from state 1
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