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slava [35]
3 years ago
7

Use the Electrostatic Series to predict the charges on the following pairs of substances when they are rubbed together:

Physics
1 answer:
Lisa [10]3 years ago
6 0
Answer: Not 100% sure but I believe the answer is B.

Hope this helps! ^^
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Explanation:

a is the acceleration

μ is the coefficient of friction

Acceleration of the object is given by

a = g (\sin  \theta -\mu \cos \theta)\\\\=10( \sin 30 - 0.4 \cos 30)\\\\=10(0.5-0.3464)\\\\=1.54m/s^2

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a=\frac{v^2-u^2}{2s}

a=\frac{0-u^2}{2s}

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Therefore, the Coefficient of kinetic friction is 0.31

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