Engineering, 10.11.2019 07:31 quee31
1. a piston having a diameter of 5.48 inches and a length of 9.50 in slides downward with a velocity, v, through a vertical pipe. the downward motion is resisted by an oil film between the piston and the pipe wall. the film thickness is 0.002 inches and the cylinder weighs 0.5 lb. compute the velocity, v if the oil viscosity is 0.016 lb*s/ft
2. assume the velocity distribution in the gap is linear. ( 0.0046 ft/sec) i need to understand this for my quiz so work steps clearly. will ! "
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Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
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The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
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Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
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Engineering, 04.07.2019 18:10
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
1. a piston having a diameter of 5.48 inches and a length of 9.50 in slides downward with a velocity...
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