Three point charges are located at the corners of an equilateral triangle with a side of 0.5m, as shown below a) calculate the net electric force on the 7.0hc charge. b) how would the answer change if both the lower charges have their signs flipped (but are unchanged in magnitude)?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked