Three equal negative point charges are placed at three of the corners of a square of side d. What is the magnitude of the net electric field at the center of the square? (k = 1/4??0 = 8.99 × 109 N • m2/C2)
What will be an ideal response?
E = 2kq/d2
You might also like to view...
Which are bigger—Celsius degrees or Fahrenheit degrees?
a. Fahrenheit b. Celsius c. Neither—they are the same size. d. This is a nonsensical comparison.
Relative Velocity: Your motorboat can move at 30 km/h in still water. What is the minimum time it will take you to move 12 km downstream in a river flowing at 6.0 km/h?
A. 20 min B. 22 min C. 24 min D. 30 min
Suppose that the Sun—Earth distance were 10 AU instead of 1 AU. Then the energy of sunlight received per square meter on Earth each second would be ________ it is today.
A) 10 times as great as B) about the same as C) 1/100 as much as D) 100 times as great as E) 1/10 as much as
Interference effects are less visible for thick films because the reflected waves
A) from the bottom surface are too dim. B) become too dispersed. C) are out of phase with one another. D) are too displaced to interfere.