25. What impulse occurs when the same force of 10 N acts on the cart for twice the time? Impulse = change in momentum: Ft = my

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples