3 years ago

Which is TRUE about static electricity?

Physics

2 answers:

Andrew [12]3 years ago

7 0

first oneeeeeeeeeeeeeeeeeeee

Fed [463]3 years ago

3 0

Answer:

the first one stationary charge

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Given that, the length of the air column in the test tube is 14.0 cm. It can be assumed that the speed of sound in air is 344 m/s. The test tube is a kind of tube which has a closed end. The frequency in of standing wave in a closed end tube is given by :

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$f=\dfrac{1\times 344}{4\times 0.14}$

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So, the frequency of the this standing wave is 614.28 Hz. Hence, this is the required solution.

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