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larisa86 [58]
3 years ago
10

A 15.0cm string is how many times shorter than the 30.0cm string?

Physics
2 answers:
coldgirl [10]3 years ago
7 0

Answer:

B

Explanation:

Just divide 30 by 15 to get the number 2

That's it!

Hope this helped and vote Brainliest, Thx :)

Alex Ar [27]3 years ago
3 0

Easy. answers B. Because 15.00x2=30

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Answer:

d = 0.0306 m

Explanation:

Here we know that for the given system of charge we have no loss of energy as there is no friction force on it

So we will have

U + K = constant

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now we know when particle will reach the closest distance then due to electrostatic repulsion the speed will become zero.

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\frac{(9 \times 10^9)(3.02 \mu C)(9.78 \mu C)}{0.0377} + \frac{1}{2}(9.43 \times 10^{-3})(80.4)^2 = \frac{(9 \times 10^9)(3.02 \mu C)(9.78 \mu C)}{r} + 0

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6 0
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Starting at 1.0 m/s, a cheetah runs with a constant acceleration for 4.8 s reaching a speed of 28 m/s. What is the acceleration
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Answer:

c.5.6m/s^2

Explanation:

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We know that

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Acceleration=a=5.6 m/s^2

Hence, the acceleration of cheetah=5.6m/s^2

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