PHYS208 Fundamentals of Physics II

Answer for Ch. 25, 3Q

  1. only oppositely charged pairs, such as in configurations (1) and (2).
  2. None!
  3. No! Remember that E is the gradient of V;
    V = 0 does not mean that E = 0!
  4. Again, only for the cases in (a).

Answer for Ch. 25, 4Q

V = - 4 k q / d

Answer for Ch. 25, 3P

(a) 30 x 109 J
(b) 7700 m/s
(c) 90 metric tons


"http://www.physics.udel.edu/~watson/phys208/exercises/answers/0216.html"
Last updated Feb. 17, 1998.
Copyright George Watson, Univ. of Delaware, 1997.