Fiber optic cable is in the form of a cylinder of fiber with index of refraction 1.67 and cladding around the outside of index of refraction 1.45. What is the maximum angle for light rays inside the fiber with respect to the cable’s axis for which the light will be fully transmitted thanks to total internal reflection?
A. 30o
B. 60o
C. 41o
D. 49o
A. 30o
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What will be an ideal response?
If ? = 8.0 V, at what rate is that emf providing energy to the circuit shown below?
a.
8.4 W
b.
7.6 W
c.
5.6 W
d.
11 W
e.
2.0 W
Diagrams like this one are commonly used in discussions of seasons and they can be quite useful. However, this diagram greatly exaggerates
A) the size of Earth relative to the size of Earth's orbit around the Sun. B) the size of the Sun relative to the size of Earth's orbit around the Sun. C) the amount by which Earth's orbit differs from a perfect circle. D) all of the answers listed. E) only the first and third choices.
What percentage of the mass of the solar nebula consisted of elements other than hydrogen and helium?
A) 20 percent B) 0.1 percent C) 80 percent D) 0 percent E) 2 percent