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One of the Niagara turbines uses 172,000 cubic feet of water perminute under a head of 215 ft. What is the horsepower developed?
An elevator is able to raise 9,800 N to a height of 22 m in 14 s. How much work does the elevator do
A novice skier starting from rest slides down a frictionless 32 degree incline whose vertical height is 125 meters
A pendulum clock with a brass suspension system m is calibrated so that its period is 1s. at 11*C (degree Celsius). If the temperature increases to 44oC, by how much does period change.
A 11.0 cm -diameter compressed-air tank is 70.0 cm tall. The pressure at 30.0 degrees C is 130 atm. How many moles of air are in the tank
An underwater diver sees the sun 50 degrees above horizontal. How high is the sun above the horizon to a fisherman in a boat above the driver.
What was the initial speed of the arrow. A block with mass m = 19.7 kg slides down an inclined plane of slope angle 35.8 deg with a constant velocity. It is then projected up the similar plane with an initial speed 1.05 m/s. How far up the incline w..
An antifreeze solution is made by mixing ethylene glycol (? = 1130 kg/m3) with water. determine the volume percentage of ethylene glycol in the solution
what is the horizontal distance x to the base. find the average net force exerted on him in the barrel of the cannon.
If a freight train can accelerate at 0.050 m/sec2, how far must it travel to increase its speed fro 2.0 to 8.0 m/sec?
A gas undergoes two processes. In the first, the volume remains constant at 0.230m3, Find the total work done by the gas during both processes
Certain sharks can detect an electric field as weak as 1.1 mu V/m . To grasp how weak this field is, how far apart would the plates have to be
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s), what is the magnitude of the average angular acceleration of the disk
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