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A heat engine is operating on a Carnot cycle and has a thermal efficiency of 75 percent. The waste heat from this engine is rejected to a nearby lake at 60°F at a rate of 800 Btu/min. Determine (a) the power output of the engine and (b) the temperature of the source.
consider a concentric tube heat exchanger with hot and cold water inlet temperature of 200 and 35c respectively. the
a iron has a bcc crystal structure an atomic radius of 0.124 nm and an atomic weight of 55.85 gmol. compute and compare
Show that the total true strain is the sum of the true strains in each step, that is the true strains are additive. Show that using engineering strains, the strain for each step cannot be added to obtain the total strain.
1. the initial conditions for an air-standard otto cycle operating with a compression ratio of 81 are 95 kpa and 17o c.
the arrhenius equation was originally developed for comparing rates of chemical reactions. compare the rates of a
a plate of mass m is suspended between two opposing jets each of area a velocity vo and density d. the plate is
a 3.084-kg steel projectile is fired from a gun. at a particular point in its trajectory it has a velocity of 300 ms an
1 a window of building loses 1.2 julessec of heat during 24 hours period time. determine heat loss during this in kj?2
asers can be used to drill or cut material. one such laser generates a series of high-intensity pulses rather than a
a polluted air stream flowing at 12000 acfm at 90 degf and 1 atm has a concentration of 500 ppm of ethylbenzene c8h10.
the required cross-sectional area of cables in a cable-stayed bridge can be estimated by keeping cable stress just at
a person weighs 180lbs at sea level. the radius of the earth is 3960 mi. what force is exerted on the person by the
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