Answer to Question #111998 in Mechanics | Relativity for Lizwi

Question #111998
If the observation deck of Washington monument is 158m above the ground.
How many king-sized candy bars, each supplying 1.4 MJ of source energy, must an 80 kg man consume to replenish the energy he expends in climbing the 825 stairs up to the observation deck?
1
Expert's answer
2020-04-27T10:22:04-0400

"nE=mgh"

"(1.4\\cdot10^6)n=(80)(9.8)(158)"

"n=0.09\\ rounded\\ up\\ to\\ n=1"


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