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A hollow sphere of aluminum, with an inside radius of 0.01 m and an outside radius of 0.02 m has its outer surface maintained at 100°C. Cold water at 0°C is available to cool the inside surface of this spherical shell, and its flow is controlled at a rate that serves to maintain the inside surface at 10°C. Assuming that the inside heat transfer coefficient between the water and the inner surface is very high, and that the water within the region is very well mixed, what is the required flow rate of the cooling water?
a dump truck is shown in the figure. the loaded container has a mass of 8000 kg and may be modelled as a solid
a uniform sphere is projected without rotation at speed v0 up an inclined plane the makes an angle theta with the
a piston-cylinder device contains 5 kg of r134a at 800 kpa and 60 c. the refrigerant is now cooled at constant pressure
Write a complete program consisting of a Main Program and Subprogram (you choose which type, but there should be only one) that fulfills the following requirements.
tests reveal that a normal driver takes about 0.75 seconds before he or she can react to a situation to avoid a
Why does a car engine stop when we turn the key even when the vehicle is running? The engine should run on alternator in case of a petrol engine and on it's own in case of a diesel engine. Then how does it stop exactly?
a closed well insulated tank contains 10 kg of air at 300 k. an electric motor drives a propeller inside the tank
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr.
Strategy formulation presupposes a set of objectives and goals.
A satellite changes its orbit inclined 66 degrees at 260.0 km altitude to a polar orbit at the same altitude. What Delta V was required?
an industrial water shutoff valve is designed to operate with 30 lb of effort force. The valve will encounter 200 lb of resistance force applied to a 1.5 in. diameter axle. what is the required wheel diameter to overcome the resistance force?
a cattle watering fountain has a free water surface with a size equal 0.6m x 0.3m with the longer side being parallel
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