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An aluminium alloy fin of 7 mm thick and 50 mm long protrudes from a wall, which is maintained at 120?C. The ambient air temperature is 22?C. The heat transfer coefficient and conductivity of the fin material are 140 W/m2K and 55 W/mK respectively.
Determine
1. Temperature at the end of the fin.
2. Temperature at the middle of the fin.
3. Total heat dissipated by the fin.
Problem 1: A small city four transportation alternatives for a bus depot based on three criteria: architectural worth, cost and public opinion. The serviceable life of the depot is 40 years.
consider a double-sided centrifugal compressor with the following design parametersoutlet diameter of impeller 50
in a piston cylinder device 5kg of air at 200kpa and 227oc is compressed to 500kpa at 100oc. determine the entropy
a 250 g 23.0-cm-diameter plastic disk is spun on an axle through its center by an electric motor. what torque must the
one-half kg of refrigerant-22 is contained in a piston-cylinder assembly initially saturated vapor at 5bar. the
an industrial water shutoff valve is designed to operate with 30 lb of effort force. The valve will encounter 200 lb of resistance force applied to a 1.5 in. diameter axle. what is the required wheel diameter to overcome the resistance force?
Is the number of prospective occupants an important consideration in the design of heating and cooling systems for classrooms? Explain.
the position of a particle moving in a curvilinear path is given by thetacos2t where theta units are radians and t
An Industrial water shutoff valve is designed to operate with 30lbs of force and will encounter 200lbs of resistance force applied to a 1.5in diameter axle. What is the required actual mechanical advantage of the system?
a force f 12t where t is in seconds is applied to a 2kg box at rest on a horizontal surface uk .3 for 5 seconds.
a centrigugal pump having a 6-in-diameter impeller and the characteristics is to be used to pump gasoline through a
A ford ranger with a mass of 2410 kg is traveling at a velocity of 65 mph down a mount ion road in Colorado. The brakes fail and the driver elects to use a "run away" truck tramp to stop the pickup. What distance in feet will it travel if the ramp ha..
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