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USPshnik [31]
4 years ago
5

A dolphin emits ultrasound at 100kHz and uses the timing of reflections to determine the position of objects in the water. What

is the wavelength of this ultrasound? Assume that temperature of water is 20C.
Physics
1 answer:
Bond [772]4 years ago
6 0
To answer the question above, 
First, let's determine the speed of sound under the water.
S
peed of sound in water at 20oC = 1482m/s 

<span>So λ = v/f = 1482m/s/(100kHz) I'm assuming your frequency is 100kHz </span>

<span>So λ would be = 0.0148m
I hope my answer helped you.</span>
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disa [49]
Answer:0.507m

To answer this question, you need to know how to calculate a cube volume. Cube volume is calculated by multiplying the length^3, make its unit become cubic meter.
In this case we know the volume is 130L and asked how long is the length in meter. Then you need to convert the liter into m3. The calculation would be:
V=R^3
130L= R^3
R= 3<span>√(130m3/1000)
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Rounded up to 0.507m</span>
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Since each serves a different purpose, theories cannot become laws. Explaining how or why a natural phenomenon occurs is what the set of ideas called theories do. On the other hand, mathematical relationships that describes what happens are what is done by laws.

 

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