Unformatted text preview: engine at t = 1 . 78 s. Answer in units oF hp. 005 (part 1 oF 2) 10.0 points A 313 kg crate is pulled along a level surFace by an engine. The coe²cient oF kinetic Friction between the crate and the surFace is . 35. The acceleration oF gravity is 9 . 8 m / s 2 . How much power must the engine deliver to move the crate at a constant speed oF 4 . 3 m / s? Answer in units oF w. 006 (part 2 oF 2) 10.0 points How much work is done by the engine in 2 . 51 min? Answer in units oF J. 007 10.0 points A rain cloud contains 3 . 59 × 10 7 kg oF water vapor. The acceleration oF gravity is 9 . 8 m / s 2 . How long would it take For a 3 . 4 kW pump to liFt the same amount oF water to an altitude oF 17000 m? Answer in units oF years....
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 Winter '08
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 Physics, mechanics, Force, Joule, time interval, single horizontal force

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