What is its period in the water?

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The discussion focuses on calculating the period of a sonar signal with a frequency of 1.00x10^6 Hz and a wavelength of 1.50mm in water. It clarifies that the period is defined as one over the frequency, which remains constant when the wave transitions from water to air. Participants confirm that while the speed and wavelength change with the medium, the frequency—and thus the period—remains the same in both environments. The conversation emphasizes understanding the relationship between frequency, wavelength, and medium. Overall, the participants successfully clarify the concept of wave behavior across different mediums.
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i need some help on this problem:
A sonar signal of frequency 1.00x10^6 Hz has a wavelength of 1.50mm in water.

a) What is its period in the water?
b)What is its period in the air?

Can someone guide me through the steps in order to arrive to the solution or explain to me how to solve this? Thanx:smile:
 
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aerogurl2 said:
i need some help on this problem:
A sonar signal of frequency 1.00x10^6 Hz has a wavelength of 1.50mm in water.

a) What is its period in the water?
b)What is its period in the air?

Can someone guide me through the steps in order to arrive to the solution or explain to me how to solve this? Thanx:smile:
What is the definition of period? It is simply one over the frequency.
When a wave changes medium (water to air) does the frequency change?
 
the medium doesn't travel with the wave so it wouldn't effect the period is that right? so the period for both water and the air would be the same?
 
aerogurl2 said:
the medium doesn't travel with the wave so it wouldn't effect the period is that right? so the period for both water and the air would be the same?
Your conclusion is correct but it's not because the medium does not travel with the wave. When a wave changes medium, its speed *and* its wavelength changes but the frequency does not change (it is ultimately connected to conservation of energy but you should not worry about that).

Patrick
 
oki thanks for your help Patrick:smile:
 
aerogurl2 said:
oki thanks for your help Patrick:smile:
You are most welcome. And best luck!
 

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