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Lubov Fominskaja [6]
3 years ago
11

Which statements describe acceleration? Check all that apply.

Physics
1 answer:
DiKsa [7]3 years ago
8 0

Answer:

Negative acceleration occurs when an object speeds up in the negative direction.

Positive acceleration occurs when an object speeds up in the positive direction.

Explanation:

This might be wrong but I get some points for a answer..

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A surface receiving sound is moved from its original position to a position three times farther away from the source of the soun
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Answer:

c. nine times as low.

Explanation:

Sound intensity is defined as the acoustic power transferred by a sound wave per unit of normal area to the direction of propagation:

I\propto \frac{1}{A}

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Here r is the distance from the source of the sound. Thus sound intensity decreases as:

I\propto \frac{1}{4\pi r^2}\\\\I'\propto \frac{1}{4\pi r'^2}\\\\I'\propto \frac{1}{4\pi (3r)^2}\\\\I'\propto \frac{1}{9} \frac{1}{4\pi r^2}\\\\I'\propto \frac{1}{9} I

6 0
4 years ago
Under what circumstances does distance traveled equal magnitude of displacement? What is the only case in which magnitude of dis
Sedaia [141]

Answer: Please find the answer in the explanation

Explanation:

Under what circumstances does distance traveled equal magnitude of displacement?

When a body's motion is linear in one direction. Or a body moving in a straight line without turning back.

What is the only case in which magnitude of displacement and distance are exactly the same?

When the body is moving in a straight line with without changing direction or without turning back.

6 0
3 years ago
2 kg
pochemuha

Answer:

2500 and kg its is very easy do with method

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