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Naya [18.7K]
3 years ago
12

A pendulum makes 50 complete swings in 2 min 40 s. What is the time period for 1 complete swing?

Physics
2 answers:
wolverine [178]3 years ago
6 0

Answer:

50 swings = 2 mins 40 secs

=> 50 swings = 160 secs

=> 1 swing = 160 / 50 secs

=> 1 swing -= 3.2 secs

If my answer helped, kindly mark me as the brainliest!!

Thank You!!

krok68 [10]3 years ago
3 0
Please give the other person his brianliest
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An automobile starter motor has an equivalent resistance of 0.0510 Ω and is supplied by a 12.0 V battery with a 0.0090 Ω interna
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Answer:

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Here we have a circuit of one power source and two resistors in series, the first question is asking for the current, so according to Ohm's Law:

I=\frac{V}{R}

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To calculate the voltage dropped by the motor we have to apply the voltage divider rule:

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V_m=12.0*\frac{0.0510}{0.15}\\V_m=4.08V

P=I^2*R_m\\P=(200)^2*0.0510=0.326kW

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