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The mechanical engineers at the University of Utah end spring semester by roasting a pig and having a picnic. The pig is roughly cylindrical and about 26 cm in diameter. It is roasted over a propane flame, whose products have properties similar to those of air, at 280?C. The hot gas flows across the pig at about 2 m/s. If the meat is cooked when it reaches 95?C, and if it is to be served at 2:00 pm, what time should cooking commence? Assume Bi to be large, but note Problem 7.40. The pig is initially at 25?C.
a rod has a cross sectional area of 1 cm2. the material has the following strength characteristics beyond which the rod
a closed system of mass 5.3 lb. undergoes a process in which there is a heat transfer of 215 ft-lbf from the system to
a 2.2 lb steel pot contains 2.2lb of liquid water both t59 degrees f. the water is heated to to boiling point of water
a rectangular block floats in pure water with .5 in. above the surface and 1.5 in. below the surface. when placed in an
a 960 N.m moment is required to straghten a post. if the capacity of a winch puller is 2400N, determine the minimum value to create the specified moment.
Servovalves have at least two stages. What are the primary roles of the first and second stages of a two stage servovalve?
If the bottom surface of the slab is 20 C and the metal foil has an emissivity of 0.02, determine the convection heat transfer co-efficient if the air is flowing over the metal foil and the surface temperature of the foil is 150 C.
when the hydrofoil shown was tested the minimum pressure on the surface of the foil was found to be 70 kpa absolute
if the 175lb man fires the 0.2 lb bullet with a horizontal muzzle velocity of 2800 fts measured relative to the 650lb
compute the overall thermal resistance of a wall made up of 100 mm brick 1920 kgm3 and 200 mm normal weight concrete
What is the axial stress in the wall of the tank due to the water pressure?
water at 10degc is pumped from a lake through a pipe to an elevation of 25 m above the lake surface. the pipe is 650 m
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