If the hydrogen atom is in the n = 4 state, what is the largest number of photons that can be emitted as the atom goes back to the ground state?
A)
0
B)
4
C)
2
D)
3
E)
1
F)
5
D
You might also like to view...
Gas and dust released by a comet's icy nucleus produce a(n) _______________ and are then blown outward, away from the Sun
Fill in the blank(s) with correct word
The amount of water displaced by a liter-sized block of ordinary wood floating in water is
A) less than 1 liter. B) 1 liter. C) more than 1 liter. D) depends on the water density E) none of the above
Today, an average lunar moonquake releases about as much energy as
A) an atomic bomb. B) a firecracker. C) a major U.S. city uses in 1 year. D) the Mount St. Helens eruption. E) the most powerful earthquake ever recorded.
Is there a force on the moon, and how do you know?
A) No, because the moon moves at an unchanging speed. B) No, because the moon is not accelerated. C) Yes, because there must be a force to keep the moon moving. D) Yes, because the moon is accelerated. E) Yes, because there must be a force pulling outward on the moon, away from Earth, to keep the moon from falling down to Earth.