An asteroid of mass 58,000 kg carrying a negative charge of 15.0 ?C is 180 m...
Homework Answers
i have a same question with solution, just you need to change the figures according to your question.
An asteroid of mass 59,000 kg carrying a negative charge of 12.0 μC is 170 m from a second asteroid of mass 58,000 kg carrying a negative charge of 15.0 μC . What is net force the asteroids exert upon each other?
Solution:
gravitational force = G M m / d^2 =
= 6.67x10^-11 * 59000 * 58000 / 170^2 =
=7.8978 x 10^-6 Newtons
elec force = k Q q / d^2 =
= 8.99x10^9 * 0.000012 * 0.000015 / 170^2 =
= 55.9931 x 10^-6 Newtons
gravity is attractive, elec force is repulsive, so total force is repulsive and equal to
55.9931 - 7.8978 = 48.1 x 10^-6 Newtons
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