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A well-insulated rigid tank contains 1 kg of air at 30°C. A paddle wheel rotates inside the tank and increases the temperature of the air to 60°C. If the environment is at 100 kPa and 25°C, determine the exergy destroyed and the minimum work input for this process.
some kg of ari is at an inital pressuuer aand temp of 1.73mnm2 and 175c it is expanded iso thermal to three volme and
a new containment vessel for nuclear waste is being tested by a group of engineers working for the u.s. department of
A mortar fires a projectile across a level field so that the range (R) is maximum and equal to 915 m. Find the time of flight.
a beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. calculate the dead
a horizontal 500 lb force performs at a point d of crankshaft ab which is held in static equilibrium by a twisting
find the entropy in a throttling process per unit mass for ammonia. take the inlet state as specified as saturated
automotive exhaust systems often use two catalytic converters. the exhaust temperature is a key factor which determines
Two tow trucks lift a 100 lb motorcycle out of a ravine following an accident. If the motorcycle is in equilibrium in the position shown, what are the tensions in cables AB and AC?
Determine the location the centroid of the area.
one kmol of ideal gas cp30 jmolk is contained in a piston cylinder initially at 25c and 10bar. the mass of the piston
before being injected into a furnace pulverized coal is preheated by passing it through a cylindrical tube whose
a the vacancy formation energy in a particular metal is 0.5 ev. calculate the concentration of vacancies at 400 oc b
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