The Variation in the Pressure of Helium Gas,measured from Its $\Delta$

question 44

Multiple Choice

The variation in the pressure of helium gas,measured from its equilibrium value,is given by $\Delta$ P = 2.9 *10 ^{- 5} cos (6.20x- 3 000t) where x and t have units m and s,and $\Delta$ P is measured in N/m².Determine the wavelength (in m) of the wave.

• A)1 500
• B)0.32
• C)477
• D)1.01
• E)0.50

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