Janice jumps directly up into the air. Which direction is she accelerating as she moves upward? A Up
B.
Down
C.
Not accelerating

How can you increase the strength of an electromagnet?

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)

Select the three ways that the parallel-plate capacitor differs from a car battery.