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pshichka [43]
3 years ago
15

You are 15.0m from the source of a sound. At that distance, you hear it at a sound level of 20.0dB. How close must you move to t

he sound to increase the sound level to 60dB?
I think its 45.0cm?

15.0cm
45.0cm
55.0cm
60.0cm
85.0cm
Physics
2 answers:
Andrej [43]3 years ago
5 0
The answer is 45.0cm
USPshnik [31]3 years ago
4 0

Answer:

Explanation:

its 85 cm because it just is in meters it would be .8m  which would be decent distance to hear it

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The momentum of a 5kg object that has a velocity of 1.2m/s is 6.0kgm/s.

<h3> MOMENTUM:</h3>

Momentum of a substance is the product of its mass and velocity. That is;

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According to this question, an object has a mass of 5kg and velocity of 1.2m/s. The momentum is calculated thus:

Momentum = 5kg × 1.2m/s

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Therefore, the momentum of a 5kg object that has a velocity of 1.2m/s is 6.0kgm/s.

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Explanation:

Given the following data;

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Force is given by the multiplication of mass and acceleration.

Mathematically, Force is;

F = ma

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m represents the mass of an object.

a represents acceleration.

Making mass (m) the subject, we have;

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Q=∆U+W

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