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littlemiss

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  1. littlemiss
    OH! I knew my question looked weird! I completely forgot the 0 in 80%! So, let me rephrase. Am I correct in my answer of 80%?
  2. littlemiss
    Work done: 10kg*9.8N/kg*4=appx 400J efficience= work done/500 * 100 I don't know what I'm doing wrong.
  3. littlemiss
    If an engine must do 500 joules of work to pull a 10 kg load up to a heaight of 4 meters, what is the efficiency of the engine? I got 8%. Am I correct?
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