A rock is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration of objects in free fall is 1.5 m/s2 and there is no atmosphere. How long does it take for the laser to reach the maximum height?
A) 8.0 s
B) 11 s
C) 14 s
D) 16 s
A
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Various singly-ionized atomic nuclei of the same speed are directed into a magnetic field in a mass spectrometer where they are deflected and strike a detecting screen. The particles most strongly deflected are those of
A) least mass. B) greatest mass. C) same for all
If the solubility of a compound is 30 grams per liter, how much solid is left undissolved if you mix 30 g of the compound in 0.33 L of solution?
A) 20 g B) 10 g C) 0 g D) 30 g E) 33 g
Components: If a vector 
has components Ax < 0, and Ay < 0, then the angle that this vector makes with the positive x-axis must be in the range
A. 0° to 90°. B. 90° to 180°. C. 180° to 270°. D. 270° to 360°. E. It cannot be determined without additional information.
What is a star's luminosity?
A) the apparent brightness of the star in our sky B) the surface temperature of the star C) the lifetime of the star D) the total energy that the star radiates each second