Question

If Ψ = 3x - 4y, the magnitude of velocity is​

Answer 1

Answer:

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Step-by-step explanation:

Since A is fixed, the rate of flow across ABP, ACP, ADP, AEP (any path connecting A and P) is a function only of the position P. This function is known as the stream function ψ. The value of ψ at P represents the volume flow rate across any line joining P to A. The value of ψ at A is made arbitrarily zero.