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A piston-cylinder device contains helium gas initially at 145 kPa, 20 degrees C, and 0.5 m^3. The helium is now compressed in a polytropic process (PV^n = constant) to 390 kPa and 140 degrees C. Determine the heat loss or gain during this process.
Write a complete program consisting of a Main Program and Subprogram (you choose which type, but there should be only one) that fulfills the following requirements.
at steady state a refrigeration cycle maintains a clean room at 55degf by removing energy entering the rom by heat
a 3 cubic meter tank contains propane at 0.5 mpa and 3degc. gas leaks out of the tank. at the time of detection of leak
Starting from rest the motorboat travels around the circular path,P = 50m , at a speed v=(0.8t)m/s, where t is in seconds. Determine the magnitude of the boat's velocity when it has traveled 40m. Determine the magnitude of the boat's acceleration ..
a force of 3 n stretches a spring by 1 m. a mass of 4 kg is attached to the spring. at t0 thenbspmass is pulled down a
six kilograms of carbon dioxide in a piston-cylinder device execute a carnot cycle consisting of the following four
a mining engineer plans to do hydraulic mining with a high-speedjet of water. a lake is located h300 m above the mine
lead experiences corrosion in an acid solution according to the following reaction pb 2h rightarrow pb2 h2 the rates
to place a communications satellite into a geosynchronous orbit at an altitude of 22240 mi above the surface of the
an elevator is created by using a hose hanging from the top of a 10 m building. the hose is diverted into 4 jets at the
would it be a possible to use a normal domestic refrigerator as a heat source for a small hot tub or whirlpool? if so
Given water h=3227 KJ/Kg Temperature 400C Find specific volume, pressure, and specific internal energy. Given R-134a T=15F quality x =0.6 Find pressure, specific volume, specific enthalpy. Given Water P=4Mpa U=3000 KJ/Kg Find Temperature, and specifi..
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