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The power P required to drive a fan is believed to depend on density p, flow rate Q, impeller dia. D, and angular veloctiy w in Hz. Determine by dimensional analysis, the general expression for dependence of P on other variables.
A 2-m^3 rigid tank contains refrigerant-134a vapor at 1.4 MPa, 180C. Determine the mass of the refrigerant in kilogram using:
the boats position during the interval of time from t 2s tp t 10s is given by s 4t1.6t2-0.08t3 ma detremine the boats
the compressor turbine of a simple gas turbine each have isentopic efficiencies of 90. the compressor pressure ratio is
a refrigerator removes heat from the refrigerated space at 2 oc at a rate of 300 kjmin and rejects heat to the kitchen
Plot the spectral blackbody emissive power of the sun versus wavelength in the range of 0.01 micro m to 1000 micro m?
in a refrigerator cycle r-12 enters an evaporator as saturated liquid at 100.4 kpa. it exits with a negligible pressure
At 500ºC the diffusion coefficient for Zn in Cu is 4.0E-18 m2/s. The activation energy for diffusion of Zn in Cu is 189 kJ/mol. Therefore at 700ºC, the diffusion coefficient for Zn in Cu is
at steady state moist air at 42c 1 atm 30 relative humidity is mixed adiabatically with a second moist air stream
Write down the transfer function of a third-order system with unity steady-state gain which has a real pole at s = -1 and a pair of complex poles at s = -1 +- ja. Simulate the open-loop step response of the system for 'a' values of 1, 2, 4, and 10, a..
how much error would one expect in determining the specific enthalpy by applying the incompressible-liquid
Determine the forces in members DE,DF, and EF of the scissors truss shown. Also, state whether the members are in tension or compression. Note that the 400 lb force is directed along the line BF and the 800 lb force is parallel to line BF.
Final page of the website requires an example of the use of steam tables and mollies charts, Use the following information to show how the answer can be calculated using either of the two methods. A. Find the enthalpy of steam at 0.4 Mpa and 0.7 dryn..
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