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Design a system to pump water at 140°F from a sump below a heat exchanger to the top of a cooling tower, as shown in Fig. 13.55. The desired minimum flow rate is 200 gal /min.
muddy meadows earthmoving can purchase a bulldozer for 80000. after 7 years of use the bulldozer should have a salvage
two moist air streams flow into a modified cooling tower to cool liquid water from 120 f to 75 f. the first moist air
you want to weigh your horse so you mount a platform to the top of a vertical spring. with the loading of the platform
Water is to be supplied at a rate of 5000 kg/s to a hydro-electric generator located at the bottom of a lake at a height h. If the efficiency of the turbine-generator is 75% and of the generator 95%;
Metal balls 10 mm in diameter are to be annealed by heating them to 827°C then allowing them to cool slowly in air at 27°C to the point where they are in thermal equilibrium with the air. 2000 balls are annealed in one hour’s time. What is the total..
question a 49 kg person drinks 520. g of milk which has a caloric value of approximately 3.0 kjg. if only 19 of the
Demonstrate the law of corresponding states by writing the van der waals equation in terms of the reduced variables. Calculate the compressibility factor for a van der waals gas at its critical point and compare the result with the values obtained fo..
A thin flat plate 6in square with a surface temperature maintained at 250°F is tested for drag in a wind tunnel with an airspeed of 100ft/s. The air is at standard sea level pressure and 60°F and flows over the top and the bottom of the plate. This f..
a helical tension spring is made of 1.2 mm wire having a yield strengths of 1280 mpa tension and 740 mpa torsion. the
Find the exact solution of the initial-value problem
find the solution to the second order ode with constant coefficients. first solve for the homogeneous solution and then
oxygen is diffusing in a mixture of oxygen-nitrogen at 1 std atm 25degc. concentration of oxygen at planes 2 mm apart
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