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Ten pounds-mass of R-22 is at an initial volume of 4.059 ft3 and pressure of 200 psia. It is compressed isobarically until its volume is two-thirds of its initial volume. The piston is then held in place as the refrigerant cools until its temperature is 70 F. Determine the heat transfer [Btu] and work transfer [Btu] for the two-step process. Also show the process on P-v state diagram.
a carnot cycle heat engine using 1 kg of air has the following conditions heat addition beginning at 15 mpa and 1200 k
a stack was sampled for 8 minutes. the gas velocity at stack conditions through the sampler was 15.0 ms and the area
Describe the four incorrect assumptions concerning robot - arm movement that are most frequently responsible for impact accidents.
a power plant operates on an ideal rankine steam cycle using water as the working fluid. the condenser operates at 10
a 600 mw coal-fired power plant has an overall thermal efficiency of 38. it is burning coal that has a heating value of
On a single graph, plot "Hardness" as the ordinate versus "Aging Time" as the abscissa for each aging temperature - Discuss the effect of aging time and temperature on the effect of material hardness.
car a is speeding in the positive x direction and is about to run through a red light and collide with car b heading
a 356 mm diameter main services a section of a mine and carries 4.8 kgs of compressed air at peak periods. if the main
an engineer designing a vibration isolation system for an instrument console models the console and isolation system as
a particle moves along a straight line with an acceleration of a 53s13 s52ms2 where s is in meters. determine the
a 120 lbf 534 n skydiver is free-falling at an altitude of 6500 ft 1980 m. estimate the terminal velocity in mph for
12.0-V battery for a cordless drill can supply 3.3 A of current. If the drill is continuously operated for 6 min, what is the total charge passing through the battery? What total amount of work does the battery do on the charge during these 6 min?
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