The figure shows an arrangement of two -4.5 nC charges,each separated by 5.0 mm from a proton.If the two negative charges are held fixed at their locations and the proton is given an initial velocity v as shown in the figure,what is the minimum initial speed v that the proton needs to totally escape from the negative charges? (k = 1/4πε0 = 8.99 × 109 N • m2/C2,e = 1.60 × 10-19 C,mproton = 1.67 × 10-27 kg)
A) 1.8 × 106 m/s
B) 3.5 × 106 m/s
C) 6.8 × 106 m/s
D) 1.4 × 107 m/s
Correct Answer:
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