PLS HELP! How will the electrostatic force be changed if the distance between two electric charges is tripled?

A)9 times the original force B)1/3 of the original force C)1/9 of the original force D)3 times the original force

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?