INSTRUCTOR’S SOLUTIONS MANUAL FOR_SERWAY AND VUILLE’S_COLLEGE PHYSICS NINTH EDITION, VOLUME 2

Choice (b). Object A must have a net charge because two neutral objects do not attract each other. Since object A is attracted to positively-charged object B, the net charge on A must be negative. 2. Choice (b). By Newton’s third law, the two objects will exert forces having equal magnitudes but opposite directions on each other. 3. Choice (c). The electric fi eld at point P is due to charges other than the test charge. Thus, it is unchanged when the test charge is altered. However, the d...