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A 168-grain bullet is accelerated in a 20 inch barrel and leaves the muzzle at 2800 ft/s. A) Determine the work done on the bullet by all external forces while the bullet is traveling in the barrel. B) Determine the kinetic energy of the bullet at the muzzle. NOTE: keep in English system
a cylindrical fuel rod has a linear power rating of 467 wcm. the radius of the fuel is 1.3 cm. the gap thickness is
geothermal energy systems extract heat that is stored below the earths crust. for every 300 ft below ground the
A heat pump is used to heat a building. The outside air temperature is -10 C and the desired inside temperature is 20.3 C. The heat loss through the walls, ceiling, etc, is 30 kW. Determine the ideal coefficient of performance and the minimum power r..
steam in a piston cylinder assembly undergoes a polytropic process with n2 from an initial state of p500 psi v11.7
Air, an ideal gas, is isentropic ally compressed from V1 = .36 ft^3, P1 = 14.5 psia, T1 = 70 F, to V2 = .03 ft^3 (compression ratio = 12). Find T2, P2 and W (work in Btu) for this process:
consider a person standing in a room at 18c. determine the total rate of heat transfer from the person if the exposed
air in a piston-cylinder assembly expands slowly from an initial state where the pressure is 250 kpa and the volume is
an air pump with a 4-in piston and a 12-in stroke compresses atmospheric air into a 5ft3 evacuated tank. assume no
a radial slider crank mechanism having a crank length of 2 inches and a coupler length of 8 inches operates at a
a baggage conveyor is used to unload luggage from an airplane. the 10 kg duffel bag a is sitting on top of the 20 kg
the rubber mallet is used to drive a cylindrical plug into the wood member. if the impact force varies with time as
Consider a rocket engine with an exit area of 8.5 m2. The flow rate of fuel and oxidizer are 75 kg/sec and 8 kg/sec respectively. Determine the thrust of the rocket if it is operating at an altitude of 200 km above sea level. The exhaust velocity and..
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