If C = 10 ?F, what is the equivalent capacitance for the combination shown?
a.
7.5 ?F
b.
6.5 ?F
c.
7.0 ?F
d.
5.8 ?F
e.
13 ?F
d
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If the polarizing angle for diamond is 67.5°, what is the index of refraction of this material?
a. 2.00 b. 2.20 c. 2.41 d. 2.65
Suppose that we connect two identical realistic batteries in parallel. The internal resistance of the combined set of batteries (considered as a unit) is
A. twice that of each individual battery. B. half that of each individual battery. C. the same as that of each individual battery.
Which are closer together: the two nuclei within potassium fluoride, KF, or the two nuclei within molecular fluorine, Image?
A) KF B) Image C) Both are the same. Any atom bonded to F will have the same inter-nuclear separation. D) It makes little sense to compare two molecules which exist in different physical states. KF is a solid while Image is a gas.
In a ferroelectric material, the electric field in the reverse direction that reduces the polarization to 0 after saturation in the forward direction is called the _________electric field.
Fill in the blank(s) with the appropriate word(s).