An atom can be excited into a higher energy state by
a. emitting a photon
b. absorbing a photon
c. undergoing the photoelectric effect
d. decreasing its de Broglie wavelength
e. the uncertainty principle
B
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_________ are electromagnetic radiation with wavelengths typically from 0.1 nm to 1 nm.
Fill in the blank(s) with the appropriate word(s).
How much energy is necessary to place three charges, each of 2.0 ?C, at the corners of an equilateral triangle of side 2.0 cm?
What will be an ideal response?
Which three played a role in the finding of Neptune?
A) Herschel, Hubble, and Einstein B) Adams, Leverrier, and Galle C) Shapley, Hubble, and Whipple D) Bode, Herschel, and Fraunhofer E) Newton, Einstein, and Tombaugh
The planet with the largest number of moons is
a. Jupiter. b. Saturn. c. Uranus. d. Neptune.