$+9\mathrm{.}20$ nC of charge is uniformly distributed along the left half of a thin rod of total length L $=8\mathrm{.}00$ m$,$ while $-9\mathrm{.}20$ nC of charge is uniformly distributed along the right half of the rod, as shown in the figure. What is the magnitude of the electric field E$⃗$ at the dot, a distance r $=2\mathrm{.}80$ m from the center of the rod? Magnitude:

 

Transcribed Image Text:

r L + + + + + + + + od r L + + + + + + + + od