Which model of light is discussed in Chapter 17?
A. Ray model
B. Photon model
C. Wave model
D. Solar model
Ans: C. Wave model
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Find the equation 
that fits the following data.
A. 
B. 
C. 
D. 
Which of the following is true of asteroids?
A) They are small rocky worlds. B) They are small icy bodies. C) Most of them are the size of Earth. D) Most of them orbit between the orbits of Mercury and Venus.
Mineral sample #2 is ________
a. Apatite - Ca5(PO4)3(F,Cl,OH) b. Corundum - Al2O3 c. Quartz - SiO2
Which of the following makes an approximate uniform electric field?
A) a metal charged sphere B) a metal charged cylinder C) a very long line of positive charge D) very large, closely separated, parallel oppositely charged plates E) two long parallel, closely separated, oppositely charged lines of charge