Which factors can affect the amount of friction acting on an object on a solid surface? a. the weight of the object and the force of a push
b. the type of surface and the weight of the object
c. the force of a push and the motion of the object
d. the motion of the object and the type of surface mark this and return

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above