What is the CNO cycle?
A) the process by which helium is fused into carbon, nitrogen, and oxygen
B) the process by which carbon is fused into nitrogen and oxygen
C) the set of fusion reactions that have produced all the carbon, nitrogen, and oxygen in the universe
D) a set of steps by which four hydrogen nuclei fuse into one helium nucleus
D
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Which of the following is a valid spin state q-vector? (If you are using the letters on the back cover, you can indicate more than one choice by pointing to several letters.)
A. 
B. 
C. 
D. 
E. None of the above
F. All of the above
A photoelectric surface has a work function of 2.10 eV. Calculate the maximum kinetic energy, in eV,
of electrons ejected from this surface by electromagnetic radiation of wavelength 356 nm. (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
In a visual binary system with circular orbits, if in 20 years the two stars' position angles have shifted by 30 degrees, the pair's period must be
A) 60 years. B) 90 years. C) 120 years. D) 240 years. E) 360 years.
If a fire truck's siren is rising in pitch, it must be approaching us
Indicate whether the statement is true or false