A point charge Q = 7.00 × 10-9 C is placed at the origin of an xy-coordinate system. What is the electric field intensity E at a distance of x = 30 cm from this charge? (Use k = 9 × 109 Nm2/C2.)
A) 100 N/C
B) 400 N/C
C) 500 N/C
D) 600 N/C
E) 700 N/C
E
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