1. When the frequency of the source of a water wave increases, the distance betw

Question

1. When the frequency of the source of a water wave increases, the distance between successive peaks in the wave (Points : 1)
remains unchanged
increases
decreases
cannot be determined


2. You drop a rock in a pond, and the water waves travel away from the rock with a certain speed. You drop a heavier rock in the water. The speed of the waves in the water from the heavier rock (Points : 1)
remains unchanged
increases
decreases
cannot be determined


3. Two speakers in a stereo emit identical pure tones. As you move around in front of the speakers, you hear the sound alternating between loud and zero. This occurs because of (Points : 1)
interference
changing sound level
diffraction
the Doppler effect
shock waves


4. The wavelength of ultrasound at 1 million Hz in air where the speed of sound is 340 m/s is (Points : 1)
0.00000034 m
0.0000034 m
0.00034 m
0.34 m
340,000,000 m

Explanation / Answer

THE CORRECT ANSWERS ARE:

1) decreases (inversely proportional)

2) remains unchanged (only intensity increases)

3) Interference (constructive and distructive)

4) 0.00034 m (speed/ frequency = wavelength)

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