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A circumferential fin of cross section, 3.7 cm-OD and 0.3 cm-thick surrounds a 2.5 cm-diameter tube. The fin is constructed of mild steel. Air blowing over the fin produces a heat transfer coefficient of 28.4 W/(m2.K). If the temperature of the fin and the air are 260°C and 38°C, respectively, calculate the heat transfer rate from the fin.
Containers arrive at a stocking station on a conveyor at the rate of five per minute. Container weight is 25 kg. Conveyor height is 50 inches and the stocking point is 70 inches above the ground. The stocking operation involves a twisting motion.
Determine the thickness of the 1.09m inside diameter pilot sphere (assume 4130 steel with ultimate tensile strength of 1,234MPa and a 200% factor of safety). The depth at which the sphere will fall is 10,908 meters.
a ventuti meter installed in a horizantal water main of diameter 150mm has athroat diameter of75mm. the coeficient of
You are to supply a design for an engine room crane which will provide maintenance support for the main engine. Your design should include the rails the crane will sit on.
a body is acted upon by an upward force of 12n and a horizontal force of 20n to the right. what are the amount and the
the fluid used is r-134a. the flow of r-134a is 70 lbmmin. if r-134a enters a compressor at -10 deg f and is a
water jey machining jet is issued through 0.3mm dia at pressure 400mpa. density of water is 1000kgmm3. the coefficient
a single-scoop ice cream cone is a composite body made from a single scoop of ice cream placed into a cone. assume that
a hydraulic dredge is used to dredge sand from a river bottom. estimate the thrust necessary to keep the boat
one u.s. gallon is equivalent to 0.1337 ft3 1 ft is equivalent to 0.3048 m and 1000ml are equivalent to m3. by using
use the generalized virial equation to speculate whether a small leak in an h2 line at 300 bar and 298 k might raise
A well-insulated piston-cylinder device initially contains 5kg of saturated mixture of refrigerant-134a at -12°C, in which 2.55kg of the refrigerant is in the liquid phase. An electric switch is turned on, and a 110-V source supplies current to a res..
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