The frequencies of four sound waves are given below. Which of these sound waves can be used to measure the depth of sea?
A. 15,000 Hz
B. 10 kHz
C. 50 kHz
D. 10,000 Hz
Answer:C
The frequencies of four sound waves are given below. Which of these sound waves can be used to measure the depth of sea?
A. 15,000 Hz B. 10 kHz C. 50 kHz D. 10,000 Hz