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ollegr [7]
2 years ago
15

Which statement is true of a mechanical wave?

Physics
1 answer:
svet-max [94.6K]2 years ago
7 0
It must have a medium. It must travel in empty space. Mechanical waves are waves which needs medium of propogation.
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A 0.20 kg mass is oscillating at a small angle from a light string with a period of 0.78 s.
Scorpion4ik [409]

Answer:

L = 15 cm

Explanation:

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L = 0.151027... m

L = 15 cm

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3 years ago
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A mechanic pushes a 2.30 ✕ 103-kg car from rest to a speed of v, doing 4,800 J of work in the process. During this time, the car
Illusion [34]

The horizontal force applied is  160 N while the velocity is  2.03 m/s.

<h3>What is the speed of the car?</h3>

The work done by the car is obtained as the product of the force and the distance;

W = F x

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5 0
2 years ago
Do you think a baseball curves better at the top of a high mountain or down on a flat plain
Serhud [2]

A baseball will curve better on the flat plain if it is higher than sea level but low elevation.  

Hope this helped!

4 0
3 years ago
A turntable with a moment of inertia of 7.2 × − ⋅ rotates freely with an angular speed of 6.5 ⁄ . Riding on the rim of the turnt
irina1246 [14]

Answer:

turntable with a moment of inertia of 7.2 × − ⋅ rotates freely with an angular speed of 6.5 ⁄ . Riding on the rim of the turntable, 2 from the center, is a hamster. When the hamster walks to the center of the turntable, the angular speed of the turntable becomes ⁄. What is the mass of hamster?

Explanation:

6 0
3 years ago
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