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Vladimir79 [104]
3 years ago
10

When a wave hits an object,energy from the wave is both absorbed and reflected off the object

Physics
1 answer:
poizon [28]3 years ago
5 0
I believe the statement is true. Have a good day.
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Warm air is more dense than cool air. Warm air is less dense than cool air Warm air and cool air have the same density
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You are exactly right. The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less

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A 48.9 kg meteor is moving in outer space. If a 8.6 N force is applied opposite the direction of motion, what is the deceleratio
nalin [4]

Answer:

The deceleration is 0.18 m/s²

Explanation:

Hi there!

Using Newton´s second law, we can calculate the deceleration:

∑F = m · a

Where:

∑F = the sum of all forces in a given direction.

m = mass of the object.

a = acceleration.

Solving for a:

∑F/m = a

The only force acting on the meteor is the applied force of 8.6 N. So, the acceleration will be:

8.6 N / 48.9 kg = a

a = 0.18 m/s²

The deceleration is 0.18 m/s² or, in other words, the acceleration is -0.18 m/s²

Have a nice day!

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Urination is one of the key mechanisms for losing fluid from the human body.
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