1a)

An isolated, negative point charge -q is fixed somewhere on the negative x-axis. The magnitude of its electric field at the origin is 16,000 N/C. The magnitude of the electric field at x = +4.0 cm is 4000 N/C. Determine the location (give x coordinate) and magnitude of the charge

1b)

If an electron were placed (at rest) at the origin and then released, how much kinetic energy would it have when it reached x = +4.0 cm? Give answer in electron volts.

PART 1. Two problems. Show work clearly. Partial credit is allowed. Additional data (you may not need all of it): Mass of electron = 9.11 x 10'\" kg Charge on electron = -1.60 x 10'19 C Problem 1. (12 pts) An isolated, negative point charge -q is xed somewhere on the negative xaxis. The magnitude of its electric eld at the origin is 16,000 N/C. The magnitude of the electric eld at x = +4.0 cm is 4000 MC. A. Determine the location (give x coordinate) and magnitude of the charge. B. If an electron were placed (at rest) at the origin and then released, how much kinetic energy would it have when it reached x 3 +4.0 cm? Give answer in electron volts