A beam of monochromatic light goes from material 1 with index of refraction n1 into material 2 with index of refraction n2 . The frequency of light in material 1 is f1 and in material 2 is f2 . What is the ratio of f1/f2?
a. n1/n2
b. n2/n1
c. 1
d. The values of n1 and n2 must be known to find the answer.
c
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A person claims to have been abducted by aliens and subjected to painful medical procedures that left scarring. However, he refuses to allow interested scientists to study his scars. This is an example of
A) hypothesis-driven science B) discovery science C) nonscience D) pseudoscience
If a solid disk and a hoop are to have the same mass and rotational inertia, then the hoop must have a ________ radius.
Fill in the blank(s) with the appropriate word(s).
If we imagine the history of the universe compressed into one year, dinosaurs became extinct ________
A) about an hour ago B) about 6 months ago C) about 3 weeks ago D) yesterday morning
In an AC series circuit, the current in a pure resistor differs in phase with the applied voltage by what angle?
a. zero b. 45° c. 90° d. 180°