Why does a glass rod become positively charged when it is rubbed with a silk cloth? the electrons from the glass rod are transferred to the silk cloth. the protons from the glass rod are transferred to the silk cloth. all the charges from the glass rod are transferred to the silk cloth. all the charges from the silk cloth are transferred to the glass rod. the protons from the silk cloth are transferred to the glass rod.

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?