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Evgesh-ka [11]
3 years ago
13

when the total amount of a quantity is the same before and after some event occurs, we say that the quantity is (blank)

Physics
1 answer:
Effectus [21]3 years ago
8 0

Ah hah !  That description fits things like mass, linear momentum,
energy, angular momentum, electric charge, and politicians.  They
never appear or disappear, they just move from place to place. 
We say that those quantities are conserved.

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How much force does a soccer goalie
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2 N

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From the question, it's given that

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A physical system that is isolated from its environment is:
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Closed

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3 years ago
A 100 kg person rides in an elevator moving at a constant speed of
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Explanation:

All this information only applies to the person. There is an extra tension force if we are talking about the elevator, but we are not. Dont forget to apply the units

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The forces ONLY acting on the person would be the force of gravity pulling them down, and the normal force that the elevator is reciprocating from the person standing on it.

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