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Assume that the power, required to drive a fan is a function of the fan diameter, D, the air density, ρ, the rotational speed,ω, and the flow rate, Q. Use D, ω, and ρ as repeating variables to determine a suitable set of pi terms.
a cylinder fitted with a piston has an initial volume of 2 ft3 and contains nitrogen at 20 lbfin2 at 80 f degrees. the
in the bird-on-a-wire group work example how do you expect the angle and tension to be related? remember that this is
Find the transverse components for a backward-propagating TM wave in a rectangular waveguide of width a and height b. Assume the backward-propagating wave propagates in the negative z direction and the amplitude of the wave is
an insulated piston-cylinder arrangement contains 2 l of saturated liquid h2o at a pressure of 150 kpa. an embedded 1.5
Derive at least four concept designs to satisfy the given specification. Use short written descriptions and simple sketches to illustrate your ideas
Find the distance between the centers of rotation, r1, given the radius of the crank r2 (distance from the center of the driving plate to the center of the pin) and assuming that the pin enters and leaves the slot smoothly.
A hydroelectric turbine passes 2 million gal/min through its blades. If the average velocity of the flow in the circular cross-section conduit leading to the turbine is not to exceed 30 ft/s, determine the minimum allowable diameter of the conduit..
1. For each case, determine the specified property data and locate the state by hand on a sketch of the T-y diagram. (a) Evaluate the specific volume, in ft3/lb, and the specific enthalpy, in Btu/lb, of water at 400°F and a pressure of 3000 lbf/in...
A mixture of air and water at a temperature of 30ºC and a pressure of 750 mmHg has a relative humidity of 75%. The wet gas is compressed to 40 psia and cooled to 20ºC. How many cubic meters of original gas were compressed if 0.75 lb of condensate (wa..
a portable heater is placed inside a laboratory chamber to maintain the inside air temperature of the chamber at
A rocket is launched horizontally (x direction) at an initial velocity of 100 m/s and travels along a parabolic path given by y 2 = (100x) km. If the x component of acceleration is ax = (2t + 15) m/s2 , where t is in seconds, determine magnitude and ..
an ammonia absorption refrigeration cycle requires 2500 btulbm heat transfer in the generator.saturated vapor leaves
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