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Unformatted text preview: lenoir (wml297) oldhomework 16 Turner (58220) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 10.0 points A car of weight 2350 N operating at a rate of 177 kW develops a maximum speed of 34 m / s on a level, horizontal road. Assuming that the resistive force (due to friction and air resistance) remains constant, what is the cars maximum speed on an incline of 1 in 20; i.e. , if is the angle of the incline with the horizontal, sin = 1 / 20 ? Answer in units of m / s. 002 (part 2 of 2) 10.0 points What is its power output on a 1-in-10 incline if the car is traveling at 16 m / s? Answer in units of W. 003 10.0 points A certain waterfall is 142 . 6 m high and has water flow rate of 33 . 8 m 3 / s. The acceleration of gravity is 9 . 8 m / s 2 . Find the maximum electric power that can be generated by these falls assuming 100% conversion of mechanical energy to electric energy. (Take the density of water to be 1 . 00 10 3 kg / m 3 ) Answer in units of W. 004 10.0 points A 157 kg physics professor has fallen into the Grand Canyon. Luckily, he managed to grab a branch and is now hanging 96 m below the rim. A student (majoring in lin- guistics and physics) decides to perform a...
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- Spring '10