3 years ago

In chemistry a 'system' is ___________________.

Physics

1 answer:

nlexa [21]3 years ago

6 0

Answer:

the awnser is A

Explanation:

the awnser is A

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If the rock starts out moving upward at 10 m/s, then it will
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Its average speed during that time is (1/2) (10 + 0) = 5 m/s .

At an average speed of 5 m/s for 1.02 sec,
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I’m not sure look it up in the internet!

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3 years ago

How long will it take to travel 200.000 m [N] traveling 10 m/s [N]?

gtnhenbr [62]

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200,000m/10m/s = 20,000s

Explanation:

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If we use F=19.2 N and q1=q2=-3.0 C, we can find the value of r, the distance between the two charges by re-arranging the previous formula:
$r= \sqrt{k_e \frac{q_1 q_2}{F} }= \sqrt{ 8.99 \cdot 10^9 N m^2 C^{-2} \frac{(-3.0C)^2}{19.2 N} } =6.49 \cdot 10^4 m=64.9 km$

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