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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 isobaric ally 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.
describe one method for manipulation of microstructure and mechanical properties for each of the following class of
at an amusement park there arae 200kg bumpers car ab and c that have riders with masses of 40 kg 60kg and 35 kg
a pendulum consisting of a bob of mass m is suspended from a massless inextensible string of length l in a viscous
the turbocharger of an internal combustion engine consists of a turbine and a compressor. hot exhaust gases flow
a heat pump has a coefficient of performance of 2 using a power input of 2 kw. its low temperature is to and the high
the blade assembly of an oscillating fan rotates with a constant angular velocity w1 -360rpm i with respect to the
the disk in a computer hard drive spins at 7200 rpm. at the radius of 30 mm a stream of data is magnetically written on
The steam line leading to the turbine inle
an unconstrained pistoncylinder assembly with a massless piston is oriented upright in an environment in which the
In a car engine gasoline (assume octane C8H18) is evaporated and then mixed with air in a ratio of 1:15 by mass. In the cylinder the mixture is at 750 kPa, 650 K when the spark fires. For that time find the partial pressure of the octane and the spec..
a solid cylinder 100 mm in diameter generates heat at a uniform rate of 7 x 106 wm3. the thermal conductivity of the
Assuming that you are a process engineer in charge of melting and casting for making an alloy that consists of 40 at% Ag and 60 at% Ni. Calculate how many grams of Ag and Ni you need to weigh to make a 400-gram solder alloy with such a composition. G..
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