What is a joule? A. A form of nuclear energy
B. The movement of heat
C. A unit of temperature
D. A unit of energy

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

a and c

c is 100% but i am confused in a

frequency or wavelenth of em radiation in a vacuum