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Sonbull [250]
3 years ago
8

100 POINTS + BRAINLIEST, HEART, & FIVE STAR.

Physics
1 answer:
saveliy_v [14]3 years ago
8 0

Answer:

Question 1 the answer is 5 cm for the one pulley system, I just took the quiz

Question 2 is 10 cm

Explanation:

The rope only needs to move 5 cm for the mass to move from 15 to 20.

For the 2 pulley system the string has to move twice as far making it 10 cm. I took the quiz and got 100%

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what will be the restoring force if a spring with a spring constant of 45 newtons per meter is pulled 0.30 meters in the downwar
Anna35 [415]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below are the choices the can be found elsewhere:

A.) 14 newtons upward 
<span>B.) 45 newtons upward </span>
<span>C.) 67 newtons upward </span>
<span>D.) 130 newtons upward </span>
<span>E.) 150 newtons upward
</span>
The answer is A.) 14 newtons upward


7 0
3 years ago
What is the unit of pressure? Why is it called a derived unit?<br>Why has SI system​
Dovator [93]

Answer:

pascal

Explanation:

its obtained after either division or multiplication

6 0
3 years ago
A ball rolls from x = - 5m to x = 0m in 1 second . What was its average velocity? (Units = m/s) Don't forget: velocities and dis
katrin2010 [14]

Answer:

+ 5 m/s

Explanation:

change in displacement = ΔX=final position - initial position

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average velocity =  ΔX/t

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kenny6666 [7]
I believe the correct answer is A) From crest to crest.
~Silver
3 0
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MrRa [10]

Answer:

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