- #1
axgalloway
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Homework Statement
Two 2.0-cm-diameter insulating spheres have a 6.50 cm space between them. One sphere is charged to + 89.0 nC, the other to - 95.0 nC.
What is the electric field strength at the midpoint between the two spheres?
Homework Equations
Esphere = KQ/r^2
k = 8.99 * 10^9
The Attempt at a Solution
Esphere1 + Esphere2 = Etotal
(k*89*10^-9) / (3.25*10^-2)^2 + (k*95*10^-9) / (3.25*10^-2)^2
= Wrong answer: 1.57*10^6 N/C