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Water vapor exists at a pressure of 10kpa and temperature of 373k. assume a reference atmosphere exists at To= 298k and Po = 100kpa. for the water vapor at the given state determine the maximum useful work that could be attained from the water if it could only transfer heat to the reference atmosphere
portable electric heaters are commonly used to heat small rooms. explain the energy transformation involved during the
an ideal gas of molar mass m is located in a uniform gravitational field whose free fall acceleration is g. a find the
steam at 320oc flows in a stainless steel pipe k 15wm. oc whose inner and out diameters are 5 cm and 5.5 cm
a 4-in. diameter disk shown weighs 10 lb. the disk is released at rest when theta30 degrees and rolls down the curved
ten grams of liquid water at 95 c are contained in the insulated container shown. the pin holding the frictionless
a truck is traveling on a level road at a speed of 60 mih when its brakes are applied to slow it down to 20 mih. an
an open belt drive connects two pulleys 1.2 and 0.5m diameter on parallel shafts 3.6m apart. the belt has a mass of
assuming that the solid shaft has been replaced by a hollow shaft of the same cross-sectional area and with an inner diameter equal to half of its own outer diameter.
a short squared timber post supports a load of 115000 pounds. if the allowable unit compressive stress is 1000 psi what
the aluminum plate of thickness t 3.5 mm. is to be designed so the maximum stress remains below 100 mpa. the hole must
Determine if the shaft has infinite fatigue life. If not, determine the number of cycles to failure. Also determine the safety factor for first cycle yield and draw a free body diagram, shear and moment diagrams, and graph the loads on the shaft..
estimate the drag of a thin square plate 3m by 4m when it is towed through water 10 oc. assume a towing speed of about
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