In the situation shown in figure T2.5c, the width of the bell curve at half its peak value is 0.021U. If we multiply NA, NB, and U by a factor of 100, then the peak’s width (as you can check) is about 0.0021U. Suppose that we increase each solid’s N and the system’s total energy by another factor of 1018 to create solids containing 1/6 of a mole of atoms (still pretty small objects by everyday standards). Assuming that the trend continues, what will be the approximate width of the combined system’s probability bell curve as a fraction of U?
A. 2 × 10-20
B. 2 × 10-22
C. 2 × 10-10
D. 2 × 10-12
E. 2 × 10-40
F. 2 × 10-42
T. Some other factor (specify).
D. 2 × 10-12
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An egg rests at the bottom of a bowl filled with water. When salt is slowly added to the water the egg rises and floats, from which we conclude
A) salt water is denser than fresh water. B) salt water is denser than an egg. C) both of these D) neither of these
The fact that many of the larger Jovian moons orbit nearly in the equatorial plane of their host world, moving in the same direction as their planet's spin, suggest that they
A) formed from a rotating disk of gas and dust like a miniature solar system B) were spun out from the rapidly spinning host world as it formed C) formed elsewhere in the solar system and were later captured D) were formed from a giant impact between the host world and another body
What is the most common depositional feature created by the work of the oceans?
What will be an ideal response?
Potential-energy values may be
a. positive only. b. negative only. c. zero only. d. all of these.