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Chapter 27 - 27.56
56. We find the drift speed from Eq. 27-7:
v
d
=
|
|
ne
=1
.
5
×
10
−
4
m
/
s
.
At this (average)rate, the time required to travel
L
=5
.
0mis
t
=
L
v
d
=3
.
4
×
10
4
s
.
J
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