A boat at anchor is rocked by waves whose consecutive crests are 125 m apart. The velocity of the wave of moving crests is 25 ms-1. What is the frequency of the rocking of the boat?
A. 0.20 Hz
B. 625 hertz
C. 100 Hz
D. 250 Hz
Answer: Option A
A. 0.20 Hz
B. 625 hertz
C. 100 Hz
D. 250 Hz
Answer: Option A
Which of the following substances will have the lowest speed of sound?
A. Water
B. Steel
C. Glasss
D. Air
What is the approximate range of sound for humans?
A. 20Hertz to 2000 Hertz
B. 20Hertz to 200Hertz
C. 20 Hertz to 20000 Hertz
D. 2 Hertz to 2000 Hertz
Loudness of sound depends upon which of the following?
A. Frequency
B. Wavelength
C. Amplitude
D. Overtones
A. On land
B. In air
C. In space
D. Underwater
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