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Pavlova-9 [17]
3 years ago
6

A violin string vibrates at 260 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way do

wn from the end
Physics
1 answer:
Advocard [28]3 years ago
3 0

Answer:

346.66 Hz

Explanation:

l_1 = Length of string which is unfingered = l

l_2 = Length of string which is vibrate when fingered = l-\dfrac{1}{4}l=\dfrac{3}{4}l

f_1 = Unfingered frequency = 260 Hz

f_2 = Fingered frequency

Frequency is inversely proportional to length

f=\dfrac{1}{l}

So,

\dfrac{f_1}{f_2}=\dfrac{l_2}{l_1}\\\Rightarrow \dfrac{f_1}{f_2}=\dfrac{\dfrac{3}{4}l}{l}\\\Rightarrow \dfrac{f_1}{f_2}=\dfrac{3}{4}\\\Rightarrow f_2=\dfrac{4}{3}f_1\\\Rightarrow f_2=\dfrac{4}{3}260\\\Rightarrow f_2=346.66\ Hz

The frequency of the fingered string is 346.66 Hz

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During this time, the total mechanical energy of the object remains constant.

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3 years ago
The springs of a 1500 kg car compress 5.00 mm when its 68 kg driver gets into the driver's seat. Part A If the car goes over a b
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Answer:

the frequency of the oscillation is 1.5 Hz

Explanation:

Given;

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The weight of the driver is calculated as;

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The spring constant, k, is calculated as;

k = F/m

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k = 133,280 N/m

The angular speed of the spring is calculated;

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The frequency of the oscillation is calculated as;

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f = (9.426) / (2π)

f = 1.5 Hz

Therefore, the frequency of the oscillation is 1.5 Hz

6 0
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The human nervous system can propagate nerve impulses at about 102 m&gt;s. Estimate the time it takes for a nerve impulse to tra
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Answer:

t = 0.196 s

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calculate

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A musical note has a frequency of 512 Hz. If the wavelength of the note is 0.685 m, what is the speed of the sound of that note?
riadik2000 [5.3K]

Answer:

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