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dsp73
4 years ago
9

Longitudinal sound waves cannot propagate through

Physics
1 answer:
SVEN [57.7K]4 years ago
7 0
<h2>Answer: Vacuum</h2>

Longitudinal sound waves are mechanical waves, that is, <u>they necessarily need a medium to propagate</u> (unlike electromagnetic waves) therefore they cannot propagate in vacuum.

This is because in this type of longitudinal waves, the vibration is parallel to the propagation direction of the wave itself. These disturbances are due to the <u>successive compressions of the medium</u>, where the particles move back and forth in the same direction as the wave.

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Answer:

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3 years ago
a block of wood loses 160 j of gravitational potential energy as it slides down a ramp. if it has 90 J of kinetic energy at the
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An object on a vertical spring oscillates up and down in simple harmonic motion with an angular frequency of 14.2 rad/s. Calcula
zubka84 [21]

Answer:

0.04865 m

Explanation:

k = Spring Constant

m = Mass

d = Distance

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Angular frequency is given by

\omega=\sqrt{\dfrac{k}{m}}\\\Rightarrow \dfrac{k}{m}=\omega^2\\\Rightarrow \dfrac{k}{m}=14.2^2

At equilibrium we have

kd=mg\\\Rightarrow d=\dfrac{mg}{k}\\\Rightarrow d=\dfrac{g}{\omega^2}\\\Rightarrow d=\dfrac{9.81}{14.2^2}\\\Rightarrow d=0.04865\ m

The distance by which the spring stretches from its unstrained length is 0.04865 m

7 0
3 years ago
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4 years ago
Horse does 200 lb while pulling a sled for 3 mi .how much work does the horse do?
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Let's convert the quantities in SI units first.
The force exerted by the horse is
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