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Leni [432]
3 years ago
9

When is a body said to be motion (movement )?

Physics
1 answer:
Stels [109]3 years ago
3 0

A body is said to be in motion when it's position changes continuously.

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Why is it not necessary for radio telescope surfaces to be as smooth as a mirror?
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It doesn't on account of radio waves are longer than optical waves. Radio waves are a sort of electromagnetic radiation with wavelengths in the electromagnetic range longer than infrared light. These long waves are in the radio locale of the electromagnetic range.
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An object is propelled along a straight-line path by a force. If the new force were doubled, is acceleration would
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6 0
3 years ago
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A cord of mass 0.65 kg is stretched between two supports 8.0 m apart. If the tension in the cord is 120 N, how long will it take
DedPeter [7]

The time taken by the pulse to travel from one support to the other is 0.208 s.

<h3>Given:</h3>

The mass of the cord is m = 0.65 kg.

The distance between the supports is, d = 8.0 m.

The tension in the cord is T = 120 N.

The time taken by the pulse to travel from one support to the other is given as,

v=\frac{d}{t}

t=\frac{d}{v}

Here, v is the linear velocity of a pulse. Its value is,

v=\sqrt{\frac{T d }{m} }

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v= 38.43 m/s

Then,

t=\frac{8}{38.43}

t=0.208 s

Thus, the time taken by the pulse to travel from one support to the other is 0.208 s.

Learn more about tension here:

brainly.com/question/24994188

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7 0
1 year ago
5 A \machine produces compression waves in a spring that is 120 cm long by pulsing twice every second. The back and forth moveme
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The correct answer is C) frequency.
In fact, the frequency is the number of wave crests (or pulses) per seconds. In our problem, the machine that produces the wave pulses two times per second, so this is exactly the frequency of the compression wave.
7 0
3 years ago
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