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Ann [662]
3 years ago
14

What do you guys know about thermal energy please explain it in the easiest way possible I'm not very smart :(

Physics
1 answer:
cluponka [151]3 years ago
7 0
Thermal energy is heat energy. Thermal means heat, and I bet you're really smart!
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What is the frequency of a wave that has a period of vibration of 2 seconds?
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The answer is 0.5 Hz

Explanation:

Its pretty easy to get the answer. One hertz (Hz) is equal to one cycle or period per second. So, just divide the period by the number of seconds.

1 period/2 secs = 1/2 Hz or 0.5 Hz

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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
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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,

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Then,

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

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