How things work college course/Quantum mechanics timeline/Quiz

• These topics are discussed in How things work college course/Quantum mechanics timeline.

1 Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime?

	high speed
	confinement to a small space
	low speed
	low mass

2 What are the units of Plank's constant?

	mass x velocity x distance
	energy x time
	momentum x distance
	all of the above
	none of the above

3 What are the units of Plank's constant?

	mass x velocity
	energy x time
	momentum x distance x mass
	all of the above
	none of the above

4 How would you describe Old Quantum Theory

	complete and self-consistent
	complete but not self-consistent
	self-consistent but not complete
	neither complete nor self-consistent

5 The first paper that introduced quantum mechanics was the study of

	light
	electrons
	protons
	energy

6 What are examples of energy?

	${\frac {1}{2}}mv^{2}$
	mgh where m is mass, g is gravity, and h is height
	heat
	all of the above

7 What are examples of energy?

	${\frac {1}{2}}mv$
	momentum
	heat
	all of the above

8 What was Plank's understanding of the significance of his work on blackbody radiation?

	he was afraid to publish it for fear of losing his reputation
	he eventually convinced his dissertation committee that the theory was correct
	the thought it was some sort of mathematical trick
	he knew it would someday win him a Nobel prize

9 What was "spooky" about Taylor's 1909 experiment with wave interference?

	The light was so dim that the photoelectric effect couldn't occur
	The light was dim, but it didn't matter because he was blind.
	The light was so dim that only one photon at a time was near the slits.
	The interference pattern mysteriously disappeared.

10 How does the Bohr atom differ from Newton's theory of planetary orbits?

	The force between proton and electron is not attractive for the atom, but it is for planets and the sun.
	The force between planets and the sun is not attractive for the atom, but it is for proton and electron.
	planets make elliptical orbits while the electron makes circular orbits
	electrons make elliptical orbits while planets make circular orbits