If it takes 560 joules of work to move an object 10 meters what force was needed

Why do astronauts in the space shuttle weigh less?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

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