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A 0.4 W cylindrical electronic component with a diameter of 0.3 cm and length 1.8 cm is mounted horizontally on a circuit board. To cool the component air is flowing across the board at a velocity of 150 m/min. If the air temperature is T∞= 45°C, determine the surface temperature of the component.
What is the composition, in atom percent, of an alloy that consists of 5.5 wt% Pb and 94.5 wt% Sn?
write a reflective assessment of how you rate yourself against these competencies and Describe the main learning outcomes that this course and the EWB project have generated for you over the semester. Have any of these learning outcomes been a ..
Hollow shaft transmitting power with shear limits. Design a hollow steel shaft to transmit 300 hp at 75 rpm without exceeding a shear tress of 8000 psi. Use 1.2:1 as the ratio of the outside diameter to the inside diameter.
Select the proper heat exchanger from American Industrial Heat Transfer Inc. company. Check whether the pressure drop on the shell side is within allowable pressure drop of 20 psi.
Tensile force formulas, A cylindrical steel beam is 2 inches diameter and 6 feet long. The modulus of elasticity is 30 x 1,000,000 psi. If the beam is subjected to a tensile force of 1000 lbs, what will be the resulting unit strain?
An air bubble rises from the bottom of a well where the temperature is 25°C, to the surface where the temperature is 27°C. Find the percent increase in the volume of the bubble if the depth of the well is 5 m. Atmospheric pressure is 101,528 Pasca..
Apparent Density, Theoretical Density and Void Volume, A compacted body of iron powder is sintered into a 20mm-diameter, 45-mm-tall cylinder which, upon weighing
Calculate the steady state excess electron and hole concentrations as a function of distance into the semiconductor.
Determine the amount of steam produced per hour, if the total heat loss is 10% of the heat available for steam raising - What would be the new heat transfer area if the fluids were in parallel flow
A gear blank has been successfully hot forged on a mechanical press in a closed die. At the beginning of a new production run
A cylindrical drill with radius r1 is used to bore vertically a hole through the centre of a sphere of radius r2.
what speed will the sleeve attain? The temperature oƒ the sleeve remains constant.
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