Twenty-five identical molecules are in a box. Microstates are designated by identifying the molecules in the left and right halves of the box. The multiplicity of the configuration with 15 molecules in the right half and 10 molecules in the left half is:
A. 1.03 × 1023
B. 3.27 × 106
C. 150
D. 25
E. 5
Ans: B. 3.27 × 106
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Assume you are not near any X-ray machines. If your eyes could only see in X-rays, what color would best describe your view of your surroundings?
a. white b. red c. violet d. black
One ancient Greek scientist, Aristarchus, had a theory about the layout of the universe that was quite different from the other Greek theories. According to Aristarchus's theory,
A) Earth is at the center and other objects move around Earth in simple circles. B) the sun is at the center and other objects, including Earth, move around the sun in simple circles. C) Earth is at the center, and the planets move around Earth in orbits that could be described as "circles-within-circles" or "loop-the-loops." D) the Earth is held up by Hercules, who stands on a turtle, who stands on an elephant, who stands on Zeus, who is beginning to think that the whole thing isn't worth the effort. E) there is no fixed center anywhere in the universe.
In a two-slit interference pattern projected on a screen, the fringes are equally spaced on the screen
1.everywhere. 2.only for large angles. 3.only for small angles.
An irregular conductor carries a surface charge density of -6.75 µC/m2 at and in the vicinity of a point P on the surface. An electron is released just above P outside the conductor
What are the magnitude and direction of its acceleration the instant after it is released? (?0 = 8.85 × 10-12 C2/N ? m2, e = 1.60 × 10-19 C, mel = 9.11 × 10-31 kg)