Question

Electricity Story Problem-Please help me. I will award a medal.

Answer 1

here you have to compute the force exerted by the charge A, and the force exerted by the charge C on charge B

Answer 2

we have:
force exerted by charge A:
\[\Large K\frac{{{q_A}{q_B}}}{{d_{AB}^2}}\]

Answer 3

where d_AB = 0.6 meters

Answer 4

force exerted by charge C:
\[\Large K\frac{{{q_C}{q_B}}}{{d_{BC}^2}}\]
where d_BC=0.8-0.6=0.2 meters

Answer 5

and as usual:
K=9*10^9 N*m^2/C^2

Answer 6

yes! nevertheless you have to consider q_B=+3.6*10^-6 Coulombs, since we are computing the modulus of that force

Answer 7

ok! we have a force of 0.18 Newton towards the charge A, like in this drawing:

Answer 8

we have a force of 3.24 Newton towards the charge C, like in this drawing: