Physics, 16.09.2019 20:30 sandersmakaylaovq5vu

Acertain battery can power a 100 ohm-resistance device for 4 hours. how long can the battery power a 200 ohm device?

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Too easy:

100Ω/4 sec = 200Ω/t

t= 8 sec

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Answer from: Quest

work: w = fd (given)

work done by chet =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

Answer from: Quest

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