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3 years ago

Each vertical line on the graph is 1 millisecond (0.001 s) of time. What is the period and

Physics

1 answer:

Mekhanik [1.2K]3 years ago

6 0

Explanation:

Given that,

Each vertical line on the graph is 1 millisecond (0.001 s) of time.

We need to find the period and the frequency of the sound wave. The period of a wave is equal to the each vertical line on graph i.e. 0.001 s.

Let f be the frequency of the sound wave. So,

f = 1/T

i.e.

$f=\dfrac{1}{0.001 }\\\\f=1000\ Hz$

So, the period and the frequency of the sound waves is 1 milliseond and 1000 Hz respectively.

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Answer:

1) $\theta=120^{\circ}$ from the positive x-axis.

2) $t=20\ min$

Explanation:

Given:

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we know that the direction of resultant of the two vectors is given by:

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where:

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$\theta=120^{\circ}$ from the positive x-axis.

Now the resultant velocity of rowing in the stream:

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Answer:

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Explanation:

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