A compound microscope gives a magnification of 200? with an eyepiece of focal length 2.00 cm. If the eyepiece is replaced with an eyepiece of focal length 1.50 cm, what magnification results?
a. 
b. 
c. 
d. 
e. 
d.
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A juggler throws two balls to the same height so that one is at the halfway point going up when the other is at the halfway point coming down. At that point:
A. Their velocities and accelerations are equal. B. Their velocities are equal but their accelerations are equal and opposite. C. Their accelerations are equal but their velocities are equal and opposite. D. Their velocities and accelerations are both equal and opposite. E. Their velocities are equal to their accelerations.
Active galaxies are thought to have _______ in their centers
a. accretion disks b. massive black holes c. accretion disks and massive black holes d. the Local Group e. a cluster of galaxies
What is the probability of rolling either a 7 or 11 on a single roll of a pair of dice?
a. 1/6 b. 2/9 c. 3/8 d. 1/3 e. 1/2
Which of the following molecules would you expect to be the most strongly attracted to a Cl- ion?
A) H-F B) H3C-CH3 C) Cl-Cl D) F-F E) CCl4