In what way would you expect a rainbow from oil droplets to differ from a rainbow caused by water droplets, assuming the oil has a greater index of refraction than water? (Hint: See page 377 of your textbook)
a. There would be no change.
b. Light rays would bend more sharply, so the arc of the rainbow would have a smaller radius.
c. Light rays would bend less sharply so that the arc of the rainbow would have a larger radius.
b
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What's a decay chain?
a. a nuclear chain reaction b. one radioisotope decaying into another, which decays into another, and so on c. the triggering of multiple fissions by a single neutron d. none of the above
A vessel containing 5.0 kg of water at 10°C is put into a refrigerator. The 1/7 HP motor (1 HP = 746 W) runs for 5.0 minutes to cool the liquid to the refrigerator's low temperature, 0°C. What is the COP of the refrigerator?
a. 5.7 b. 4.6 c. 6.5 d. 7.2 e. 3.6
When a beam of white light is refracted through a prism, which of the following colors has the greatest angular deviation from the original direction of the beam?
1.red 2.yellow 3.blue 4.violet
What is a "pulsating star"?
A. a star whose mass changes as it comes into contact with another star B. a rotating neutron star that emits radio waves in a narrow beam C. a star whose luminosity changes as it regularly expands and contracts D. a planetary nebula