If the barrier width for an STM is 0.1 nm, what would be the corresponding minimum momentum uncertainty of an electron traversing this boundary?
a. 10–25 kg•m/s
c. 10–24 kg•m/s
b. 10–23 kg•m/s
d. 10–22 kg•m/s
C
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If a piece of iron and a cup of water at the same temperature are heated so the internal energy of each doubles
A) the water will have the higher temperature. B) the iron will have the higher temperature. C) both will have the same temperature. D) need more information
A mirror with a focal length 100 cm has a 4.0 cm object placed 20 cm in front of it. What is the height of the image?
A) -3.2 cm B) 3.2 cm C) 5.0 cm D) -5.0 cm E) 4.0 cm
We do not know for certain whether the general trends we observe in stellar birth masses also apply to brown dwarfs. But if they do, then which of the following would be true?
A) Brown dwarfs would be responsible for most of the overall luminosity of our Milky Way Galaxy. B) Most of the brown dwarfs in the Milky Way Galaxy would be quite young in age. C) Brown dwarfs would outnumber all ordinary stars. D) Brown dwarfs would be extremely rare.
Regional metamorphism causes a parallel arrangement of mineral grains that results in a pronounced layering of the rock. The layering is known as ______________
Fill in the blank(s) with correct word