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```MasteringPhysics: Course Home
10/13/10 9:02 AM
What is the capacitance of capacitor
?
=
Problem 31.40
Description: (a) For what electric field strength would the current in a 2.0-mm-diameter nichrome wire be
the same as the current in a 1.0-mm-diameter aluminum wire in which the electric field strength is 0.0080
V/m?
Part A
For what electric field strength would the current in a 2.0current in a 1.0-
-diameter nichrome wire be the same as the
-diameter aluminum wire in which the electric field strength is 0.0080
?
=
0.10
Problem 31.44
Description: In a classical model of the hydrogen atom, the electron moves around the proton in a circular
orbit of radius 0.053 nm. (a) What is the electron's orbital frequency? (b) What is the effective current of
the electron?
In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius
0.053 nm.
Part A
What is the electron's orbital frequency?
6.56
Part B
http://session.masteringphysics.com/myct/courseHome?courseID=1017996
Page 10 of 13
```
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