A rubber eraser is used to clean a small glass dry-erase board, which subsequently accumulates a positive charge of +15 nC. What charge-carrying particles are being transferred between the eraser and the board during this process? Also, which of the two - the eraser or the board - is the recipient of these charge-carrying particles?

A nylon sock is rubbed against a piece of faux fur fabric, causing the sock to become negatively charged due to the transfer of electrons. After rubbing, the sock is brought near a small neutral aluminum foil hanging from a non-conductive thread. When the negatively charged sock touches the aluminum foil, the foil becomes negatively charged as well.Use a given diagram to explain what happens and why the aluminum foil becomes negatively charged.

Imagine someone wearing woolen socks walking across a carpet on a dry day. Due to the friction from their movement, their body accumulates a net charge of -45.0 μC. Calculate the number of excess electrons responsible for this charge accumulation and determine the resulting increase in their mass.