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gregori [183]
2 years ago
8

View the chart on the characteristics of electromagnetic and mechanical waves and answer the question.

Physics
2 answers:
photoshop1234 [79]2 years ago
7 0

Answer:

a

Explanation:

Elza [17]2 years ago
4 0
I think the answer is c
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A 50.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300 and the
Dimas [21]

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98N and 147N

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m=50kg\\\mu_s =0.4\\\mu_k = 0.2\\F=140N

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