The speed of surface waves in deep water is given by v = gT/2?. What is the wavelength of a wave that has a period of 3.00 s?
A) 4.68 m
B) 29.4 m
C) 14.1 m
D) 44.1 m
E) 39.4 m
C
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Barbara travels 20. km Northward, then travels 40. km Eastward, then continues for 50. km in a Southward direction. What displacement will now take her back to her initial position?
A) 30. km Westward + 40. km Northward B) 50. km Northwest C) 40. km Westward + 30. km Northward D) 30. km Northward + 30. km Westward E) 40. km Eastward + 30. km Southward
Which of the patterns shown below would appear on a screen when monochromatic light first passes through a narrow slit for which a = ? and then strikes the screen? Note that the darkest area in each illustration represents the brightest area on the screen.
A.
B.
C.
D.
E.
A pane of red glass transmits primarily
A) red light. B) the complementary color of red light. C) all colors of light.
If the current flowing through a circuit of constant resistance is doubled, the power dissipated by that circuit will
A) quadruple in magnitude. B) double in magnitude. C) decrease to one-half of what it was. D) decrease to one-fourth of what it was.