A charge of 50-?C is placed on the y axis at y = 3.0 cm and a 77-?C charge is placed on the x axis at x = 4.0 cm. If both charges are held fixed, what is the magnitude of the initial acceleration of an electron released from rest at the origin?
A. 1.2 × 1020 m/s2
B. 1.5 × 1020 m/s2
C. 1.0 × 1020 m/s2
D. 1.8 × 1020 m/s2
E. 2.0 × 1020 m/s2
Answer: A
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