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slava [35]
3 years ago
14

While sitting on the couch, I am pushing down on it and it is pushing up on me. Which of Newton's laws of motion is this demonst

rating_______.
Physics
2 answers:
ArbitrLikvidat [17]3 years ago
7 0
The third law of motion. Every action has an equal and opposite reaction. You exert a force on it and it exerts it back.
olga nikolaevna [1]3 years ago
5 0

Answer: Newton's 3rd Law

Explanation:

Newton's third law states that for every action there is an equal and opposite reaction. This encompasses the idea that as you are pushing down on the couch, it is pushing pack up on you with an equal and opposite force.

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3 years ago
Two +1 C charges are separated by 30000 m, what is the magnitude of<br> the force?
Kipish [7]

Answer:

<em>The magnitude of the force is 10 N</em>

Explanation:

<u>Coulomb's Law</u>

The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

\displaystyle F=k\frac{q_1q_2}{d^2}

Where:

k=9\cdot 10^9\ N.m^2/c^2

q1, q2 = the objects' charge

d= The distance between the objects

We have two identical charges of q1=q2=1 c separated by d=30000 m, thus the magnitude of the force is:

\displaystyle F=9\cdot 10^9\frac{1*1}{30000^2}

\displaystyle F=9\cdot 10^9\frac{1*1}{30000^2}

F = 10 N

The magnitude of the force is 10 N

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