Multiple Choice
The figure shows an arrangement of two particles each having charge Q = -6.8 nC and each separated by 5.0 mm from a proton.If the two particles are held fixed at their locations and the proton is set into motion as shown, what is the minimum speed the proton needs to totally escape from these particles? (mproton = 1.67 × 10-27 kg, e = 1.60 × 10-19 C, k = 1/4πε0 = 9.0 × 109 N ∙ m2/C2)
A) 2.2 × 106 m/s
B) 4.3 × 106 m/s
C) 8.3 × 106 m/s
D) 1.7 × 107 m/s
Correct Answer:

Verified
Correct Answer:
Verified
Q4: Two protons are released from rest,with only
Q35: At a distance d from a
Q36: Three point charges are placed at
Q37: What the electric energy density at a
Q38: A 12.0-V battery (potential source) is connected
Q39: The potential difference between two square parallel
Q42: Four +6.00-µC point charges are at the
Q43: A +7.5-nC point charge is 5.0 cm
Q44: Two very large parallel metal plates, separated
Q49: A parallel-plate capacitor consists of a set