In Fig. 23-44a, an electron is shot directly away from a uniformly charged plastic sheet, at speed Vs = 2.0 X lOs mls. The sheet is nonconducting, fiat, and very large. Figure 23-44b gives the electron's vertical velocity component v versus time t until the return to the launch point. What is the sheet's surface charge density?
22,2017 Friday September = EF F. +Fa + F, ÷ ×= f×= , cos@ +F. oooo = Fzcoso ' r " an → , lhqjqjkahwtofsfafaffgoffahataindaandaadisavatarthcsisneutonsiandhao + F. sin, → D - I → 0 ya H=