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skelet666 [1.2K]
3 years ago
12

A student pushes a chair into a desk. If the student's push is the action force, then what is the reaction force in this example

of Newton's third law?
A the force from the chair on the student
B the force that the chair exerts on the desk after it is pushed in
C the force of friction acting on the chair
D the force of gravity acting on the chair
Physics
2 answers:
Brrunno [24]3 years ago
7 0

Answer: C

Explanation:

Lana71 [14]3 years ago
7 0
C
The force of friction. Is acting on the chair
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The sound power the person generated is 2.313 \times 10^{-5} \ W.

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The area of the sound wave is calculated as follows;

A = 4\pi r^2\\\\A = 4 \pi \times (2)^2\\\\A = 50.272 \ m^2

<h3>Power generated</h3>

The sound power the person generated is calculated as follows;

P = I A\\\\P = 4.6\times 10^{-7} \ W/m^2 \ \ \times \ \ 50.272 \ m^2\\\\P = 2.313 \times 10^{-5} \ W

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