# What is the mathematical relationship between pressure, p, and intensity, I ?

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- VamanLv 79 months ago
No relationship. Intensity can be any value so is the pressure. Pressure and intensity are not related.

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- oubaasLv 79 months ago
I = watt/m^2

p = N/m^2

since watt are N*m/sec , then I/p = m/sec , i.e. a speed

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- Andrew SmithLv 79 months ago
The ENERGY stored in something that is compressed, like a spring, is proportional to the square of the compression.

( E =1/2 k x^2 = 1/2 k (yP)^2)

so that the intensity ( meaning the energy in the wave ) is proportional to the square of the physical amplitude.

Which in turn is a measure of the pressure.

so i is proportional to P^2

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