As you walk away from a plane mirror on a wall, the height of your image
A) is always the same size.
B) is always a real image, no matter how far you are from the mirror.
C) gets smaller.
D) changes from being a virtual image to a real image as you pass the focal point.
E) may or may not get smaller, depending on where the observer is positioned.
A
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The "horns" of the crescent moon point
a. always away from the Sun. b. in random directions. c. down toward Earth. d. always away from Earth.
Which of the following is true of the Terrestrial planets?
A) The smaller Terrestrial planets have molten cores. B) The smaller Terrestrial planets tend to be geologically active. C) The larger Terrestrial planets have solid cores. D) The larger Terrestrial planets tend to be geologically active.
If a 20 and a 40 ohm resistor are wired in series to the same source, the current through the 40 ohm resistor will be:
a. 0.33 b. 0.5 c. 1.0 d. 2.0 e. 3.0 amps