A person looking through eyeglasses sees
a. real images
b. virtual images
c. erect images
d. inverted images
e. polarized images
B, C
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The color on the outer edge of the primary rainbow is
A) white B) red C) violet D) yellow E) green
A bar magnet is falling through a loop of wire with constant velocity. The north pole enters first. As the south pole leaves the loop of wire, the induced current (as viewed from above) will be
a. clockwise. b. counterclockwise. c. zero. d. along the length of the magnet.
The terrestrial planets have
a. relatively high densities. b. solid surfaces. c. weak magnetic fields. d. all of these.
A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. Which one has the greater buoyant force on it?
A) the aluminum B) the lead C) Both have the same buoyant force. D) It cannot be determined without knowing their volumes.