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Alexxx [7]
3 years ago
15

A 15 W electric shaver is used for 3 minutes. How much energy does it use in joules?​

Physics
1 answer:
borishaifa [10]3 years ago
3 0
P=change in E/t
Change in E=p*t
=15*3
=45

The answer is 45J.
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b. 14

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Percentage increase in power is given as

\frac{(P_{f} - P_{i})\times100}{P_{i}} \\\frac{((1.14) P_{i} - P_{i})\times100}{P_{i}} \\14

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