An electron is in an infinite square well (a box) that is 8.9 nm wide
What is the ground state energy of the electron? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19)
A) 0.0048 eV
B) 0.0057 eV
C) 0.0066 eV
D) 0.0076 eV
E) 0.0085 eV
A
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In metals, at temperatures below half of the melting temperature, plastic strain is due to _________motion.
Fill in the blank(s) with the appropriate word(s).
The lobes of a radio galaxy can be as much as
A) dozens of light-years from the galaxy's nucleus. B) hundreds of light-years from the galaxy's nucleus. C) thousands of light-years from the galaxy's nucleus. D) millions of light-years from the galaxy's nucleus. E) billions of light-years from the galaxy's nucleus.
A child is riding on a merry-go-round, which is accelerating
What is the relationship between the angular speed ? and the angular acceleration ? of the merry-go-round when the tangential and centripetal accelerations of the child are equal?
As you go higher and higher above the surface of the earth, the acceleration of a freely falling body __________
Fill in the blank(s) with correct word