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"Fuel energy" is available at 2000 F at a local power plant. What is the maximum work that can be produced for each BTU of fuel energy if it is winter and the surroundings are at 40 ¯F ? If this work is used to maintain a residence at 80 F, how much energy (ideally) can be delivered to the residence for each BTU of fuel energy?
a 700 kg automobile is traveling at 30 msec when it suddenly applies its breaks and lock the wheels. when this happens
a balanced wheel supported on springs is rotating at 1200 rpm. if a bolt weighing 15 g and located 5 cm from center
A 20 MW back-pressure steam turbine receives steam at stagnation pressure of 4 MPa and stagnation temperature of 300oC, exhausting from the last stage at stagnation pressure of 0.35 MPa. The turbine isentropic efficiency is 0.884, and mechanical loss..
1 water flows through a 45 ft pipe with a 0.5 in diameter at a flow rate of 5 gpm. what facrtion of this pipe can be
Water enters one stream of an unmixed stream heat exchanger at 20°C and increases in temperature by 10°C. Air enters the second stream on the heat exchanger at 400°C and 5 kg/s. The air temperature at the exit of the heat exchanger is 200°C cooler th..
consider two reversible refrigerators operating in series. the first refrigerator removes heat at the rate of 250 kw
1. for each of the two proposed replacement presses determinenbspa. initial investment.nbspb. operating cash inflows.
a flow is described by velocity field where a 0.2 s-1 and b 0.4 ms2. at t 2 s what are the coordinates of particles
one pound of nitrogen as an ideal gas expands isothermally at 70degf from a volume of 1 ft3 to a volume of 2 ft3.
steam in a counter flow condenser of a steam power plant is to be condensed at a temperature of 30c with cooling water
Lane College in Jackson, Tennessee, is considering the conversion of an abandoned church pew manufacturing plant adjacent to the school's campus into a 34,000-square-foot building to house the campus bookstore, a conference center, a small business i..
the following activities and times were recorded for a mold operator removes molded piece from die 0.6 walks 10ft to a
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