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1.
In the Rutherford scattering experiment, the "targets" were
2.
Why was Rutherford so surprised at the results of his scattering experiment?
Answer
3.
Choose all correct options below (unless all are incorrect):
Quanta (a.k.a. photons)
4.
A hot incandescent object emits ________ light than does a cool one of the same size.
(You can check 0, 1, or 2 boxes before submitting.)
5.
In the photoelectric effect experiment, the stopping voltage tells us
6.
Why was it considered strange that low-frequency light, no matter how bright, couldn't produce any photocurrent when shined on a metal plate?
Answer
7.
Choose all correct options below (unless all are incorrect):
You can increase the kinetic energy of electrons ejected from a metal plate by shining _____ light on the plate.
8.
Which of the following has the least energetic photons?
9.
UV light consisting of 4.8 eV photons is shined on metal, producing photoelectrons whose maximum kinetic energy is 1.9 eV. If we now switch to violet light consisting of 3.1 eV photons, what is the maximum electron kinetic energy?
10.
How was J. J. Thomson able to measure the charge-to-mass ratio (e/m) of the electrons he discovered?
Answer
11.
An example of Brownian motion would be the random motion of a _______ in water.
12.
How does Brownian motion demonstrate the reality of atoms?
Answer
13.
J. J. Thomson was able to measure the ________ of the electrons he discovered.
(You can check 0, 1, or 2 boxes before submitting.)
14.
Max Planck claimed that the atoms in the walls of a blackbody