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OlgaM077 [116]
3 years ago
5

This is the method by which a wave travels through a medium or a vacuum.

Physics
1 answer:
madreJ [45]3 years ago
4 0
It can't. Waves must have a medium to travel through
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A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250-kg crate. If g-9.
seraphim [82]

Answer:

0.31

Explanation:

horizontal force, F = 750 N

mass of crate, m = 250 kg

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The friction force becomes applied force = 750 N

According to the laws of friction,

Friction force = μ x Normal reaction of the surface

here, μ be the coefficient of friction

750 = μ x m g

750 = μ x 250 x 9.8

μ = 0.31

Thus, the coefficient of static friction is 0.31.

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Explanation:

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