The variation in the pressure of helium gas, measured from its equilibrium value, is given by δp = 2.9 × 10−5 cos (6.20x − 3 000t), where x and t have units m and s, and δp is measured in n/m2. determine the wavelength (in m) of the wave.

The wavelength of this wave is 1.01 meters.

Explanation:

The variation in the pressure of helium gas, measured from its equilibrium value, is given by :

..............(1)

The general equation is given by :

...........(2)

On comparing equation (1) and (2) :

Since,

So, the wavelength of this wave is 1.01 meters. Hence, this is the required solution.

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