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A heat engine is operating on Carnot cycle. The waste heat from this engine is rejected to a nearby lake at 62F at a rate of 800Btu/min. A the engineer, you know that the metallurgical temperature limit for the blades in the turbine is 1900R before they will incur excessive creep. What is the maximum efficiency for this plant?
a car is to be hoisted by elevator to the fourth floor of a parking garage which is 48 ft above the ground. if the
the suspension of an automobile can be approximately by the simplified spring-dashpot determine and plot the amplitude
as the airplane begins its takeoff run at t 0. the normal forces exerted on its tires at a and b are na 4.2 kn and nb
the arm of the robot has a fixed length of r3ft and it grips a moves along the path z3sinthetaft where theta is in
a vehicle is moving along a straight line with an acceleration given by ms2 where s is in m. at s 0 t 0 and v 6 ms.
argon enters an insulated nozzle at 277 kpa 1300 k 10 ms and exits at 100 kpa 645 ms. for steady-state operation
initially an insulated rigid tank contains 3.73 kg of water at 240oc and 1 mpa. a heater in the wall of the tank
a flow of 30.5 kgmin of water from a hot water tank at 51oc is mixed with a 29.1 kgmin flow of 20oc water. determine
a spool of mass m radius r and radius of gyration kg rolls without slipping on an incline whose angle with respect to
a timber beam is to be selected to sustain a maximum transverse shear of vmax 50 kn without exceeding an allowable
a steel rod with a diameter of 2 cm length l25cm thermal conductivity of 50 wmk is exposed to ambient air at 20c. heat
four forces are applied to a W200x35.9 rolled beam as shown. determine the principal stresses and maximum shearing stress at point a.
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