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You are building a small hydroelectric generator for a hospital in a remote village. the hospital needs approximately 800 kWh/wk to run lights and two refrigerators to store its vaccines. You are planning on using a waterfall that is 65 m tall. write and simplify the energy balance for this system and calculate the required volumetric flow rate (in liters per second) in an ideal system (frictionless). how will the actual volumetric flow rate vary from your solution? why?
a rectangular solar thermal collector sits on the roof of a house only one side is exposed to air and solar radiation
determine the magnitude of the initial velocity of the bullet and the magnitude of the force exerted by the bullet on the block.
an open feedwater heater operates steadily with 30 kghr of liquid water entering one inlet at 40 degcnbspand 700 kpa.
a furnace is hsaped like a long equilateral-triangular duct where the width of each side is 2 m. heat is supplied from
consider two types of steady-state expansionthrottling devices for ammonia 1 a rigid valve amp 2 a turbine that is used
steam enters an extraction turbine in a vapor power plant operating at steady stte at 10 mpa 480 c. 25 of the steam is
hot air at 207 kpa and 200degc enters a 2.5-cm-id tube at 6 ms. the tube is constructed of copper with a thickness of
ethanol c2h5oh is burned with air in a sie with a fuel-rich mixture. consider mon 89 and ron 107 for this fuel.
a thin 1 mm thick ?-iron membrane at 250degc is subjected to an atmosphere of hydrogen gas on one side and the
a piston cylinder device contains 0.3kg of r134-a initially at 0 c and 400 kpa. the cylinder is then heated until the
A plane can fly 305 mph in still air. If it can fly 185 miles downwind in the same amount of time it can fly 120 miles upwind, find the velocity of the wind.
milk is to be transported from texas to california for a distance of 2100 km in a 7-m-long 2-m-external-diameter
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