60
CHAPTER 16
16.51
(a)
12
16
3
3
1.00
10
kg
9.09
10
m
1100 kg m
m
ρ
−
−
×
==
=
×
V
Since
3
4
3
r
V
π
=
, the radius is
13
3
4
V
r
=
, and the surface area is
()
23
16
3
10
2
m
3
4
.
5
4
1
0
m
V
−
−
=
=×
2
44
Ar
ππ
39
.09 10
4
×
(b)
0
A
C
=
d
κ
∈
( )( )
12
2
2
10
2
13
9
5.00
8.85
10
C
N m
4.54
10
m
2.01 10
F
100
10
m
−−
−
−
×⋅
×
×
×
(c)
( )
13
-3
14
2.01
10
F
100
10 V
2.01
10
C
V
=∆=
×
×
=
×
QC
and the number of electronic charges is
14
5
-19
2.01
10
C
1.26
10
1.60
10
C
Q
n
e
−
×
=
×
×
16.52
Since the capacitors are in parallel, the equivalent capacitance is
( )
01 2 3
01
02
03

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