Question: A plastic rod that has been charged to -15 nC touches a metal sphere. Afterward, the rods charge is -10 nC. a. What kind of

A plastic rod that has been charged to -15 nC touches a metal sphere. Afterward, the rod’s charge is -10 nC.
a. What kind of charged particle was transferred between the rod and the sphere, and in which direction? That is, did it move from the rod to the sphere or from the sphere to the rod?
b. How many charged particles were transferred?

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