Select the correct answer from each drop-down menu.
Balloon B is negatively charged.
A
В
B
Balloon A is
charged. If balloon A approaches balloon C, there'll be a force of
charged, and balloon C is
between them.

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

+15-35=-20

going in opposite directions