The process of leveling of the Earth by the wearing away of high places and the transportation of sediment to lower places is known as
a. mass wasting.
b. the hydrologic cycle.
c. degradation.
d. gradation.
d
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A 0.30-m-radius automobile tire accelerates from rest at a constant 2.0 rad/s2 . What is the centripetal acceleration of a point on the outer edge of the tire after 5.0 s?
a. 300 m/s2 b. 33 m/s2 c. 30 m/s2 d. 3.0 m/s2
Two loudspeakers are placed facing each other and driven by the same source at 680 Hz. A listener is positioned between the two speakers on the line separating them, thus creating a constructive interference at the listener's ear. If one of the speakers is gradually pushed toward the listener, how far must it be moved to repeat the condition of constructive interference at the listener's ear?
(The speed of sound = 340 m/s.) a. 0.13 m c. 0.50 m b. 0.25 m d. 1.00 m
Which of the following claims can be tested by scientific means?
a. the final thought of Abraham Lincoln were about the fate of his country b. God exists c. blue is the best color for walls d. people born when the sun is in constellation of Leo are more financially successful than other people
A vertically polarized beam of light of intensity 100 W/m2 passes through a polarizer with its transmission axis at 40.0° to the vertical. What is the transmitted intensity of this beam of light?
A) 100 W/m2 B) 0 W/m2 C) 25.0 W/m2 D) 44.4 W/m2 E) 58.7 W/m2