Answer:
Speed is solved with time and distance but has no direction
Average velocity is solved with Δx/Δt and has a direction
I can't decide between A and B, but B seems more likely to me. Even though the molecules don't look like they're moving, the area of contact is slightly more compressed.
We are to solve for the net electric field (E) given that there were two electrical charges at point A and B. The given values are the following:
Ea (at point A) = 7.1 x 10^5 newtons/coulomb
Eb (at point B) =2.2 x 10^5 newtons/coulomb
Solving for the net charge, we have:
E = Ea + Eb
E = 7.1x10^5 + 2.2 x10^5
E = 9.3 x 10^5 Newtons/Coulomb
The net electric field is 9.3 x10^5 Newtons/Coulombs.
