Two balloons are charged with -0.0025 C each and held apart at a separation distance of 8 m. What is the magnitude of the electrical force of repulsion between them?

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Answer 1 · 2015-02-20T14:06:56

The answer is: #F==877N#.

The low is:

#F=1/(4piepsilon_0)(q_1q_2)/r^2#, or #F=k_e(q_1q_2)/r^2#, where

#k_e=8,98*10^9C^-2m^2N# is the constant of Coulomb.

So:

#F=8,98xx10^9C^-2m^2N*((-0.0025C)(-0.0025C))/(8m)^2=877N#.