Apositively charged insulating rod is brought close to an object that is suspended by a string. if the object is repelled away from the rod we can conclude: a) the object is positively charged b) the object is negatively charged c) the object is an insulator d) the object is a conductor e) none of the above two small charged objects repel each other with a force f when separated by a distance d. if the charge on each object is reduced to one-fourth of its original value and the distance between them is reduced to d/2 the force becomes: a) f/16 b) f/8 c) f/4 d) f/2 e) f