Tuesday

September 2, 2014

September 2, 2014

Posted by **cat** on Monday, December 3, 2012 at 2:26pm.

(c) If the human body is only 24% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfast?

I got 24075.32468 stairs to perform an amount of mechanical work equivalent to the food in one jelly doughnut (which is correct). I assumed that I would just multiply that number by 0.76 (100%-24%) and then add my answer to 24075 stairs, but that was wrong. I then tried the 24% but that was wrong to. What do I do?

- college physics -
**Anonymous**, Sunday, January 20, 2013 at 8:45pmpencil in water is shown. determine the angle theta about which the pencil is bent?

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