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Arnold's Trivium
1991 Arnold's Trivium
71
71
Part of
1991 Arnold's Trivium
Problems
(1)
Problem 71
Source:
7/1/2010
Calculate the charge density on the conducting boundary
x
2
+
y
2
+
z
2
=
1
x^2 + y^2 + z^2 = 1
x
2
+
y
2
+
z
2
=
1
of a cavity in which a charge
q
=
1
q = 1
q
=
1
is placed at distance
r
r
r
from the centre.