When the frequency of the source of a water wave increases, the distance between successive peaks in the wave
a. remains unchanged.
b. increases.
c. decreases.
d. cannot be determined.
c
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Indicate whether the statement is true or false
An object is rotating with an angular momentum of magnitude 20.0 kg?m2/s in a direction directly east. A torque of magnitude 10.0 N?m acts in a direction 30° north of east acts on the object for 5.00 s
What is the angular momentum after the torque has acted? A) 45.0 kg?m2/s, 51.3° north of east B) 68.1 kg?m2/s, 21.5° north of east C) 25.0 kg?m2/s, 51.3° north of east D) 63.3 kg?m2/s east E) 32.0 kg?m2/s, 51.3° north of east
What is 34 + (3 ) × (1.2465 ) written with the correct number of significant figures?
A) 37.74 B) 37.7395 C) 38 D) 37.7 E) 4 × 101
Consider two mercury barometers, one with twice the cross-sectional area of the other. Neglecting capillarity, compared with the wider tube, mercury in the smaller tube will rise
A) to the same height. B) twice as high. C) four times as high. D) more than four times as high. E) none of the above