What is the force, in terms of Coulomb's constant, between two electrical charges of #-3 C# and #-4 C# that are #4 m # apart?

1 Answer
Jul 2, 2016

#F=3/4K#

Explanation:

Given the force for 2 bodies of set charge, in terms of Coulomb's constant is
#F=K(q_1q_2)/r^2#

Here, we'll take #q_1=-3C# and #q_2=-4C# and #r=4m# so that means #r^2=16m#

Substituting the values, we get #F=k(-3*-\cancel4^1)/cancel{16}^4#

Cancelling the negative terms, we see that the answer is what I have mentioned up there.