An atomic model of the atom is
A) a symbolic representation of the atom.
B) a stepping stone to further understanding.
C) an abstraction enabling predictions.
D) all of the above
Answer: D
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According to Mathiessen’s rule, the electrical resistivity of a metal is the _________of electrical resistivity of 0, 1, 2, and 3-dimensional defects and thermal vibrations.
Fill in the blank(s) with the appropriate word(s).
A CD has a diameter of 12.0 cm. If the CD starts from rest and has a constant angular acceleration of 2.0 
then the angular velocity of the CD after 3.0 sec is
A. 12 rad/s. B. 10 rad/s. C. 9.0 rad/s. D. 8.0 rad/s. E. 6.0 rad/s.
Astronomers can detect the spin rates of stars by
A) their temperature. B) changes in temperature. C) absorption spectra. D) the Doppler effect. E) all of the above
The amount of energy necessary to remove an electron from an atom is called that atom's ______________
Fill in the blank(s) with correct word