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A car engine burns 5 kg fuel (equivalent to addition of QH) at 1500 K and rejects energy to the radiator and the exhaust at an average temperature of 750 K. If the fuel provides 40 000 kJ/kg what is the maximum amount of work the engine can provide?
A 0.7-lb block rests on top of a 0.5-lb block supported by but not attached to a spring of constant 9 lb/ft. The upper block is suddenly removed. Determine (a) the Maximum velocity reached by the 0.5-lb block, (b) the maximum height reached by the..
you want to weigh your horse so you mount a platform to the top of a vertical spring. with the loading of the platform
a rigid insulated vessel is divided into two compartments connected by a valve. initially one compartment occupying
Discuss some of the circumstances where mechanical ventilation is required in the welding standards.
a steady flow centrifugal compressor is supplied with saturated water vapor at 15kpa and 500kg of the water is
a 500 mw electric station utilizes a rankine cycle power plant with superheat. the steam temperature and pressure at
An ideal vapor-compression refrigeration cycle uses r-134a as the working fluid is used to cool a brine solution to -5 C. This solution is pumped to various buildings for the purpose of air conditioning. The refrigerant evaporates at -10 C with a tot..
it is well known that wind makes cold air feel much colder as a result of the wind-chill effect which is due to the
1 when a computer is turned off its cpu begins to cool off. imagine that the internal energy of the cpu is given by u
the rocket is traveling straight up at 100ms. its mass is 90000kg and the thrust of its engine is 2400kn. aerodynamic
sufficient heating systems must be developed for a manned mission to the surface of mars. indeed the martian surface
refrigerant 134a enters an adiabtic compressor as a saturated vapour at -20degree c and exits at 1mpa pressure. if the
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