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Anna [14]
3 years ago
5

"If you double the wavelength of a wave on a particular string", what happens to the wave speed v and the frequency f ? (i) v do

ubles and f is unchanged; (ii) v is unchanged and f doubles; (iii) v becomes onehalf as great and f is unchanged; (iv) v is unchanged and f becomes one-half as great; (v) none of these. â
Physics
2 answers:
nadezda [96]3 years ago
5 0

Answer:

v doubles and f is unchanged

Explanation:

According to the formula v = f¶

Where v is the velocity of the wave

f is the frequency

¶ is the wavelength

Velocity is directly proportional to wavelength. Direct proportionality shows that increase in velocity will cause an increase in the wavelength and decrease in velocity will also cause a decrease in wavelength with the frequency not changing since the velocity and wavelength are both increasing and decreasing at the same rate.

According to the question, if the wavelength is doubled, the velocity (v) will also double while the frequency (f) remains unchanged.

blagie [28]3 years ago
5 0

Answer:

(i) v doubles and f is unchanged

Explanation:

The relationship between wave speed (v), frequency (f) and wavelength (λ) of a string wave is given by;

v = f x λ

As seen, the wave speed is directly proportional to the frequency provided the wavelength remains constant. Also, if frequency is left constant, the wave speed will be directly proportional to the wavelength. Also the frequency increases as wavelength decreases and vice-versa while the speed remains constant.

Therefore, when the wavelength is doubled, the wave speed will also be doubled while frequency remains unchanged.

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3 years ago
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Mkey [24]

Answer:

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Explanation:

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The people around us have the power to make us fat, consume more alcohol, worry less about the environment and expose ourselves to the sun without proper protection, among many other things.

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3 0
3 years ago
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A bicyclist is travelling at 25 m/s when he begins to decelerate at -4m/s2 . How fast is travelling after 5 seconds
Umnica [9.8K]

Initial velocity (Vi) = 25 m/s

acceleration (a) = -4 m/s^{2}

time interval (t) = 5 sec

let us assume that final velocity after 5 sec be Vf

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Hence, V_{f} = 25 +(-4)(5) = 25 -20 = 5 m/s

so, the velocity of bicyclist will be 5 m/s after 5 sec

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Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it
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Explanation:

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3 years ago
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