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taurus [48]
3 years ago
6

Help with 7 - 9 please!

Physics
1 answer:
USPshnik [31]3 years ago
4 0

Answer:

Try lookin those questions up on Brainly

Explanation:

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Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 3 sin (2x) cos 5t wher
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Answer:

The wavelength of the interfering waves is 3.14 meters.

Explanation:

Given that,

The equation of standing wave that is formed by interfering two harmonic waves (travelling opposite direction) is given by :

y=3\ sin(2x)\ cos(5t)........(1)

The general equation of standing wave is given by :

y=2A\ sin(kx)\ cos(\omega t)..............(2)

On comparing equation (1) and (2), we get :

k = 2

We know that,

\dfrac{2\pi}{\lambda}=k

\dfrac{2\pi}{\lambda}=2

\lambda=3.14\ m

So, the wavelength of the interfering wave is 3.14 meters. Hence, this is the required solution.      

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A bathtub has 62.7 kg of water at 31.0
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