Find out isentropic efficiency of the compressor
Air enters an adiabatic compressor at 20 °C and 100 kPa at a rate of 2 kg/s, and exits at 700 kPa. If the power input to the compressor is 460 kW, determine the isentropic efficiency of the compressor.
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An inventor claims to have devised a refrigeration cycle that at steady state requires a net power of .8 hp to remove 13,000 Btu/hr of energy. What is the maximum thermodynamic coefficient of performance for the cycle.
During March, Leija completed and sold Job #359. Job #360 was also completed but was not sold by month end. Job #361 was not completed by the end of March. What is Leija's work in process inventory balance at the end of March?
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A 0.75-kg mass moving with a speed of 5.0 m/s encounters a 0.25-kg mass moving in the opposite direction with speed 5.0 m/s. Assume the objects collide in an elastic collision where no energy is lost. What is the final velocity of both objects?
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Solar panels are priced based on the number of kilowatts they generate. You pay the utility an amount based on the number of kilowatt-hours you use. What is the connection between kW and kW·h?
What is the work produced (kJ/kg) during the expansion process? Calculate the magnitude (kJ/kg) and direction of the heat transfer during the expansion process.
You must make a payment of $1,629.01 in 10 years. To get the money for this payment, you will make 5 equal deposits, beginning today and for the following 4 quarters, in a bank that pays a nominal interest rate of 8% with quarterly compounding.
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