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Alecsey [184]
3 years ago
15

A circuit has a resistance of 10ohmsband a current of 42 amps.caculate the voltage

Physics
1 answer:
Anon25 [30]3 years ago
3 0
R=U/I so
U=RxI
U= 10 x 42
U= 420 volts
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A 200 g load attached to a horizontal spring moves in simple harmonic motion with a period of 0.410 s. The total mechanical ener
defon

Complete question:

A 200 g load attached to a horizontal spring moves in simple harmonic motion with a period of 0.410 s. The total mechanical energy of the spring–load system is 2.00 J. Find

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(b) the amplitude of the motion = 0.292 m

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total mechanical energy of the spring, E = 2 J

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\omega = \frac{2\pi}{T} \\\\\omega = \frac{2\pi}{0.41} \\\\\omega = 15.33 \ rad/s

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\omega = \sqrt{\frac{k}{m} } \\\\\omega^2 = \frac{k}{m} \\\\k = m \omega^2\\\\k = (0.2)(15.33)^2\\\\k = 47 \ N/m

(b) the amplitude of the motion

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