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The Eyebrow Trimmer 5000 XL that Duncan's "friends" used in themalicious eyebrow-shavingattack works at 30 J/s and gaveout a total of 450J of pure trimming energy.How long did it take for Duncan's friends
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33 votes
33 votes
The Eyebrow Trimmer 5000 XL that Duncan's "friends" used in themalicious eyebrow-shavingattack works at 30 J/s and gaveout a total of 450J of pure trimming energy.How long did it take for Duncan's friends to shave off his eyebrows?

User JanLikar
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1 Answer

11 votes
11 votes

In order to determine the time, use the following formula for the power:


P=(E)/(t)

where,

P = 30J/s

E = 450J

t = ?

Solve the equation above for t and simplify:


t=(E)/(P)=(450J)/(30(J)/(s))=15s

Hence, the time was 15s

User Campfire
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