Passage VII
Identical spheres, X and Y, had electrical charges Qx and QY, respectively. Throughout each of 13 trials, the spheres remained fastened to the horizontal floor of a vessel a distance d apart, with X due east of Y (see Figure 1).
The vessel was filled with a medium having a dielectric constant, K. (K reflects a medium's ability to modify the electrical force between charges.) X exerted an electrical force of magnitude FY on Y, and Y exerted an electrical force of magnitude Fx on X. Each force was directed either east or west.
Table 1 lists K for 4 media. Table 2 lists Qx, QY, d, the medium, Fx, and FY for each trial.
38. In each of the 13 trials, how did the magnitude of the electrical force exerted by Sphere X on Sphere Y compare to the magnitude of the electrical force exerted by Sphere Y on Sphere X ?
Your Answer is
Correct Answer is H
Explanation
Find the comparison result of FX and FY. Look at table 2, all FX=FY (after all, force is mutual, if you hit me with a force of 100N, your hand will also receive a reaction force of 100N. Come on, hurt each other)