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R-134a fills a 0.1 m3 capsule at 20oC, 200 kPa. It is placed in a deep freezer, where it is cooled to -10oC. The deep freezer sits in a room with ambient temperature of 20oC and has an inside temperature of -10oC. Find the amount of energy the freezer must remove from the R-134a and the extra amount of work input to the freezer to perform the process.
two particles a and b start from rest at the origin s 0 and move along a straight line such that aa 6t-3fts2 and ab
readeachquestioncarefully.remembertoexplainyoursolutionasyougosincedesignproblemscanbesolvedinanumberofways.itisacceptab
For a vehicle in gravitationless space, determine the mass ratio necessary to boost the vehicle velocity by 1600 m/sec; the effective exhaust velocity is 2000 m/sec and the initial total vehicle mass is 4000 kg.
Carbon dioxide enters an adiabatic compressor at 100kPa and 300K at a rate of 0.5kg/s and exits at 600kPa and 450K. Considering constant specific heat, determine (a) isentropic efficiency of the compressor (b) the rate of entropy change in (kW/K) ..
a piston - cylinder device initially contains 0.1 m3 of nitrogen gas at 150 kpa and 130 degc. the nitrogen is now
the dredger is loading a sand onto a barge.the sand leaves the dredger pipe at 4ft/s with a weight flux of 850 lbs/s. estimate the tension on the mooring line caused by this loading.
the melting temperatures for various materials are listed in the inside cover of callister. some representative values
a pneumatic displacement gage is to be used to measure displacement between 0.1 and 0.2 mm. the output of the device is
In the an ideal turbo jet, the engine is designed such that the turbine work is divided equally between the compressor and the propeller. The gas from the turbine discharges to a nozzle for additional thrust.
Calculate the yield stress of the material and the force required to produce yield - determine the bulk modulus of the material.
Bypass air exits at 600 m/s while combustion air exits at 1000 m/s. What is the thrust in kN of this engine?
Evaluate the maximum theoretical power that can be developed by the turbine, in kW, and the corresponding exit temperature.
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