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charle [14.2K]
3 years ago
7

Sarah moves her box in 3 minutes and does 14 J of work. John moves his box in the same amount of time using 12 J of work. Who is

more powerful?
Physics
2 answers:
Mekhanik [1.2K]3 years ago
4 0
(Energy) divided by (time) = (power). / / / / / / (More energy) divided by (same time) = (more power).
Vikentia [17]3 years ago
4 0

Just took the test, the answer was "Sarah, since she moved her box in the same amount of time but did more work."

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The briquette is better fuel than wood why give two reason​
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Answer:

wood

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B I thing hope this helps

7 0
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Difference between constant speed and average speed
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7 0
3 years ago
Read 2 more answers
6. Two light bulbs are designed for use at 120 V and are rated at 75 W and 150 W. Which light bulb has the greater filament resi
Nonamiya [84]

\\ \bull\tt\longrightarrow P=\dfrac{V^2}{R}

  • P is power
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\\ \bull\tt\longrightarrow R=\dfrac{V^2}{P}

Hence

\\ \bull\tt\longrightarrow R\propto V

\\ \bull\tt\longrightarrow R\propto \dfrac{1}{P}

  • Therefore if power is low then resistance will be high.

The first bulb has less power hence it has greater filament resistance.

5 0
2 years ago
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