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Vesna [10]
2 years ago
7

Which car is faster A or B

Physics
1 answer:
-BARSIC- [3]2 years ago
4 0

Answer:

A

Explanation: Car A is the fastest

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Your car's 30.0 W headlight and 2.50 kW starter are ordinarily connected in parallel in a 12.0 V system. What power (in W) would
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Answer:

<h3>The power of headlight in series connection is 29.64 W</h3>

Explanation:

Given :

Power of headlight P_{1} = 30 W

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From equation of power,

 P = \frac{V^{2} }{R}

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For finding the resistance of headlight and starter,

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Since equivalent resistance,

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R_{eq} = 4.8 +0.057 = 4.857 Ω

So power in series is given by,

 P_{s } = \frac{V^{2} }{R_{eq} }  = \frac{144}{4.857}

 P_{s } = 29.64 W

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