PLEASE PLEASE HELP!!
A wave with a wavelength of 2 meters travels at 6 hz. What is its velocity?
3 m/s
4 m/s
8 m/s
12 m/s
One-hundred (100) wavelengths pass every 5 seconds. What is the frequency of the wave?
1 Hz
20 Hz
500 Hz
It cannot be determined.
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Ответ:
Explanation:
(1) We have,
Wavelength of a wave is 2 meters
Frequency of a wave is 6 Hz
It is required to find the velocity of a wave. The velocity of a wave is given by :
So, the velocity of a wave is 12 m/s.
(2)
Number of waves passing are 100
Time taken to pass the wave is 5 seconds
The frequency of wave is given by total number of waves passing per unit time. So,
Frequency of a wave is 20 Hz.
Ответ: