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rosijanka [135]
3 years ago
7

By counting the number of crests that pass in a given amount of time, a person can calculate the

Physics
1 answer:
ladessa [460]3 years ago
3 0
By calculating the crests, you can find the waves' frequency.
Hope this helps!
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Question 7
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4 0
3 years ago
A ball is dropped from 8.5 meters above the ground. If it begins at rest, how long does it take to hit the ground?
Anna35 [415]

Answer:

Explanation:

Givens

d = 8.5 meters

vi = 0

a = 9.81

t = ?

Formula

d = vi * t + 1/2 a t^2

Solution

8.5 = 0 + 1/2 9.81 * t^2       multiply both sides by 2

8.5 = 4.095 t^2                  Divide both sides by 4.095

8.5/4.095 = t^2

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6 0
3 years ago
Marks: 1
____ [38]

Answer:

W = 5W

Explanation:

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W = Watts

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s = seconds

W = J/s

W = 300J/60s

W = 5W

6 0
2 years ago
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