An object with charge q = -5.00×10^-9 C is placed in a region of uniform electric field and is released from rest at point A. After the charge has moved to point B, 0.500 m to the right, it has kinetic energy 4.00×10^-7 J.
Part A
If the electric potential at point A is +30.0 V, what is the electric potential at point B?
Part B
What is the magnitude of the electric field?
Part C
What is the direction of the electric field?
a) from point A to point B
b) perpendicular to the line AB
c) from point B to point A