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The absorber plate and the adjoining cover plate of a flat-plate solar collector are at 70 and 35°C, respectively, and are separated by an air space of 0.05 m. What is the rate of free convection heat transfer per unit surface area between the two plates if they are inclined at an angle of 60° from the horizontal?
You are asked to choose the largest block size with the constraint that the average internal fragmentation be less 5% of the total number of bytes stored. Show your work.
A hypothetical A-B alloy of composition 56 wt% B-44 wt% A at some temperature is found to consist of mass fractions of 0.5 for both alpha and beta phases. If the composition of the beta phase is 88 wt% B-12 wt% A, what is the composition of the alpha..
a regenerative steam power cycle has a closed feedwater heater that heats 20 kgs of water from 100degc 20 mpa to
The peak power of a 6ft. diameter antenna is 10 watts and its duty cycle is 0.250. The wave length is 0.03m/cycle. Find the power density in mw/cm2 at 50 meters from the antenna.
Verify that pure shear has principal directions at 45 degrees from the original orientation of the block. Show that the principal directions for stress and strain are the same. Is this due to the nature of Hooke's Law? Do you expect it to be true ..
1. A piston-cylinder assembly contains 0.1 lb of propane. The propane expands from an initial state where p1 5 60 lbf/in.2 and T1 5 30°F to a final state where p2 5 10 lbf/in.2 During the process, the pressure and specific volume are related by py2 5..
two steel i-beams each with a mass of 100 kg are welded together at right angles and lifted by vertical cables so that
steel balls 12 mm in diameter are annealed by heating to 1150 k and then slowly cooling to 400 k in an air environment
Superheated steam enters one section of an open end feed water heater at 5bar and 240 c with a mass flow rate of 1 kg/s. compressed liquid water at the same pressure and 35 C enters another inlet. The mixture of these two streams leaves as a saturate..
in the ice cream con, L=4in , and Theta = 35 degree, the cone is filled with ice cream such that the portion above the cone is a hemisphere. determine the volume of the ice cream? (usin Matlab program )
Consider a particle of mass m moving in two dimensions between two perfectly reflecting walls which intersect at an angle alpha at the origin. Assume that when the particle is reflected, its speed is unchanged and its angle of incidence equals its an..
the 2000 lb load can be moved along the beam bd to any position between stops at e and f. knowing that sigmaall6ksi for
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