posted by Anonymous .
Three charges are located on a horizontal axis.
12 µC −0.8 µC 12 µC
2.9 m 2.9 m
Determine the magnitude of the electric
ﬁeld at p, vertically above the charge −0.8 µC
as shown in the ﬁgure. Let up be the positive direction. The Coulomb constant is
8.98755 × 10
N · m2
Answer in units of V/m