An atom gained an electron. Therefore, it has been ionized
a. True
b. False
Indicate whether the statement is true or false
True
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The greater the frequency of the illuminating light on a photosensitive surface, the greater the
A) number of ejected electrons. B) velocity of ejected electrons. C) both of these D) neither of these
When NASA was communicating with astronauts on the Moon, the time from sending on the Earth to receiving on the moon was 1.33 s. Find the distance from Earth to the Moon. (The speed of radio waves is 3.00 × 10^8 m/s.)
a. 240,000 km c. 399,000 km b. 384,000 km d. 768,000 km
If a surface is illuminated by magenta light and the red is absorbed, then the color of the surface will appear as
A. green. B. yellow. C. blue. D. red.
Thunderstorms are most associated with which of the following?
What will be an ideal response?