A light beam is incident upon a still water surface. What is the maximum possible value for the angle of refraction? (nwater = 1.333)
a. 76.2°
b. 67.5°
c. 54.4°
d. 48.6°
d
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Suppose there are 3 molecules in a container. If each molecule has a 1-in-2 chance of being in the left half of the container, what is the probability that there are exactly 2 molecules in the left half of the container?
A. 1/2 B. 1/3 C. 1/8 D. 3/8 E. 3/5
In a fission bomb explosion, how many neutrons [on the average] created during the fission of a 235U nucleus cause further fission in other uranium nuclei?
A) None B) Less than one C) More than one D) One E) Ten
Write the node equations for determining the temperature distribution through the cast iron lathe slide shown in Figure 2-68.
What is the present scientific status of Newtonian physics?
A) Newtonian physics is now known to be wrong and thus it is no longer useful in science. B) Although we cannot know for certain that Newtonian physics is correct, no violations have ever been discovered. C) We now know that Newtonian physics is correct. D) Newtonian physics does not apply to very small objects, high-speed objects, and very strong gravitational forces. E) Newtonian physics does not apply to very small objects, but otherwise no violations have been discovered.