Two point charges are located on the positive x-axis of a coordinate system.

Charge 91 = 5.0 nC is 4 cm

from the origin, and charge

92 = - 3.0 nC is 5 cm from

the origin. What are the magnitude and direction of the total force exerted by these two charges on a

charge 93 = 4.0 nC located

at the origin? Gravitational forces are negligible.

O A. 7.9 × 10-6 N: +x direction

• B. 8.7 × 10-5 N: -x direction

O C. 5.7 × 10-6 N : +x direction

• D. 6.9 × 10-5 N: -x direction

O E. 6.7 × 10-6 N: -x

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