Recitation Quiz 8 Solutions

Recitation Quiz 8 Solutions - into electricity without any...

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Quiz for Thursday, September 27. Version A: How fast would a 7A kg person have to climb stairs to conzume the same amount of power as a 1000 W light bulb? Give answer in km / h. Version B: A 60 kg person walks up the stairs of a building with a vertical velocity of I m/s. How many 45 W light bulbs could be lit with this power? p=+{p = r.o = rn?\"1 =(c"tr\(tr ")t\t) = TEKw ' d\t r ., 6 'r \- 583- = \1.,06 tl sr*, . : r\r t3 tt:w L\ (*t\r 5 Couutl) i5{ L-t-i- Version C: A 100 kg mass (on a mass-less rope) is allowed to drop with a constant
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Unformatted text preview: into electricity without any loss, how many 75 W light bulbs could this light? . -,. i \ - . \ w 7 - - f f N - t r r t = ; r r v 1 ' d t 3 " \ | t " ' f s i = 1 g o w r * A F f . v = t \ f f \ v \ = i \ o c ' ? t r L ' s ' " J " - i I = t3.oQ . -- ^-t3 -15 \'lJ Cout-4 {f UGN^T5---t-|. \ Version D: A 100 W light bulb consumes a lot of energy. How large of a mass has to be lifted at the rate of I m I s to require 100 W of lifting power? P c r ( J r\= = \O,f- VU \cp rv (1.9 H[\,"^'5J...
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