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BARSIC [14]
3 years ago
11

One string of a certain musical instrument is 75.0cm long and has a mass of 8.77g . It is being played in a room where the speed

of sound is 344 m/s.
To what tension must you adjust the string so that, when vibrating in its second overtone, it produces sound of wavelength 0.761m ?
(Assume that the breaking stress of the wire is very large and isn’t exceeded.)
Physics
1 answer:
zheka24 [161]3 years ago
3 0
The question is asking to calculate the tension that the string has to adjust the string so that when vibrating in its second overtone, it produces sound of wavelength of 0.761m, base on my calculation, the calculation must be done by the formula of <span>v=λf</span><span>., I hope this would help </span>
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2 years ago
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A ray of light passes from one material into a material with a higher index of refraction. Determine whether each of the followi
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Answer:

a) the Angle te also decreases , b) decrease, c) unchanged , d) the speed decrease , e) unchanged

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When a ray of light passes from one transparent material to another, it must comply with the law of refraction

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Where index v1 is for the incident ray and index 2 for the refracted ray

With this expression let's examine the questions

a) They indicate that the refractive index increases,

      sin θ₂ = n₁ / n₂ sin θ₁

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Answer is decrease

b) The wave velocity eta related to the wavelength and frequency

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The frequency does not change since the passage from one medium to the other is a process of forced oscillation, resonance whereby the frequency in the two mediums is the same.

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c) from the previous analysis the frequency remains unchanged

d) the refractive index is defined by

       n = c / v

So if n increases, the speed must decrease

The answer is decrease

e) the energy of the photon is given by the Planck equation

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3 years ago
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Answer:

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The additional load is dropped onto the car. Let v will be its speed. On applying the conservation of momentum as :

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