Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
22.4 A uniformly charged solid sphere with a total charge of 50 nC and a radius R1 = 30 cm is surrounded concentrically by a...?
22.4 A uniformly charged solid sphere with a total charge of 50 nC and a radius R1 = 30 cm is surrounded concentrically by a thin spherical shell. The thin shell has a total charge of –17 nC and a radius R2 = 45 cm. Find the electric field at distances of
a)14 cm, b) 37 cm, and c) 52 cm from the center of the sphere.
- ?Lv 77 months agoFavorite Answer
a) at 14 cm, the "enclosed" charge is
Q = 50nC * (14/30)³ = 5.08e-9 C
E = kQ / d² = 8.99e9N·m²/C² * 5.08e-9C / (0.14m)² = 2331 N/C
b) at 37 cm, the enclosed charge is 50 nC:
E = 8.99e9N·m²/C² * 50e-9C / (0.37m)² = 3283 N/C
c) at 52 cm, the enclosed charge is 33 nC:
E = 8.99e9N·m²/C² * 33e-9C / (0.52m)² = 1097 N/C
Hope this helps!