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Physics
Physics
Problem
A
+
4.0
μ
C
+4.0\,\mu\text{C}
+
4.0
μ
C
test charge experiences a force of
2.4
×
10
−
4
N
2.4\times10^{-4}\,\text{N}
2.4
×
1
0
−
4
N
when it is
0.30
m
0.30\,\text{m}
0.30
m
from a point charge
Q
Q
Q
. What is the magnitude of
Q
Q
Q
? (Take
k
=
9.0
×
10
9
N
m
2
/
C
2
k = 9.0\times10^{9}\,\text{N\,m}^2/\text{C}^2
k
=
9.0
×
1
0
9
N
m
2
/
C
2
.) a)
6.0
×
10
−
7
C
6.0\times10^{-7}\,\text{C}
6.0
×
1
0
−
7
C
b)
2.0
×
10
−
9
C
2.0\times10^{-9}\,\text{C}
2.0
×
1
0
−
9
C
c)
6.0
×
10
−
10
C
6.0\times10^{-10}\,\text{C}
6.0
×
1
0
−
10
C
d)
−
6.0
×
10
−
10
C
-6.0\times10^{-10}\,\text{C}
−
6.0
×
1
0
−
10
C
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