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A long, 10 cm square copper bar is bounded by 260C gas flows on two opposing sides. These flows impose heat transfer coefficients of 46W/m^2K The two intervening sides are cooled by natural convection to water at 15C, with a heat transfer coefficient of 30W/m^2K. What is the heat flow through the block and the temperature at the center of the block?
an ideal otto cycle has a compression ratio of 8. at the beginning of the compression process air is at 100kpa and
1. steam is supplied dry saturated at 40 bar to a turbine and the condenser pressure is 0.035 bar. if the plant
for the following calculations take g 9.8ms2 and pwater1000kgm31. assuming there are both a pressure gage and a
determine the power required for a 1150-kg car to climb a 100-m-long up hill road with a slope of 30degrees from
Estimate a value for the convective coefficient, h, with the basis of your estimate and show a diagram with the energy fluxes on the pipe.
a piston cylinder device initially contains 0.5 kg of r134a at 200 kpa and a specfic volume of 0.07 m3kg. at this point
two moles of nitrogen are initially at 10 bar and 600 k state 1 in a horizontal pistoncylinder device. they are
a closed cylindrical tank that is 6 ft in diameter and 26 ft long is completely filled with gasoline. the tank with its
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three resistors connected in series have resistance values in the ratio 11.53.3 and combine to an equivalent resistance
You have a 120 Ω quarter bridge 2 wire set up with Sg=2.10 and an unknown lead wire resistance. A 59880Ω calibration resistor is switched in parallel to the gage only and a recording instrument is set to give a -100 mm deflection for this calibrat..
How do you the bubble point temperature and Vapor mole fractions at the bubble-point for a mixture at 690kPa that is 10.0mol % ethylene, 40.0 mol % ethane, and 50.0 mole % propane. Use the Depriester chart.
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