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sertanlavr [38]
3 years ago
14

The speed of a transverse wave in a string is 18.81 m/s. If a source produces a disturbance that has a frequency of 9.9 Hz, what

is its wavelength?
Physics
1 answer:
krok68 [10]3 years ago
6 0

Answer:1.9 meters

Explanation:

Wavelength=velocity ➗ frequency

Wavelength=18.81 ➗ 9.9

Wavelength=1.9

Wavelength is 1.9 meters

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A uniform rod is set up so that it can rotate about a perpendicular axis at one of its ends. The length and mass of the rod are
igor_vitrenko [27]

Answer:

0.231 N

Explanation:

To get from rest to angular speed of 6.37 rad/s within 9.87s, the angular acceleration of the rod must be

\alpha = \frac{\theta}{t} = \frac{6.37}{9.87} = 0.6454 rad/s^2

If the rod is rotating about a perpendicular axis at one of its end, then it's momentum inertia must be:

I = \frac{mL^2}{3} = \frac{1.27*0.847^2}{3} = 0.303kgm^2

According to Newton 2nd law, the torque required to exert on this rod to achieve such angular acceleration is

T = I\alpha = 0.303*0.6454 = 0.196 Nm

So the force acting on the other end to generate this torque mush be:

F = \frac{T}{L} = \frac{0.196}{0.847} = 0.231 N

4 0
4 years ago
Provided the amplitude is sufficiently great, the human ear can respond to longitudinal waves over a range of frequencies from a
riadik2000 [5.3K]

Answer:

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Explanation:

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the wavelength is

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cellulose and pectin are present on the cells of collenchyma...

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The answer is D.

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How is lithium fluoride and lithium chloride similar?
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