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75. The radius of the cylinder (0.020 m, the same as
r
B
) is denoted
R
, and the field
magnitude there (160 N/C) is denoted
E
B
. The electric field beyond the surface of the
sphere follows Eq. 2312, which expresses inverse proportionality with
r
:
G
E
E
R
r
rR
B
=≥
for
.
(a) Thus, if
r = r
C
= 0.050 m, we obtain
G
E
==
160 0 020
0 050
64
b
gb
g
b
g
..
N
C
.
(b) Integrating the above expression (where the variable to be integrated,
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This note was uploaded on 01/25/2011 for the course PHYSICS 17029 taught by Professor Rebello,nobels during the Spring '10 term at Kansas State University.
 Spring '10
 Rebello,NobelS

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