Which is true when comparing a prescription and on over-the-counter drug

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

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

How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?