Question: Consider the polar-coordinate velocity potential = Br1.2cos (1.2), where B is a constant. (a) Determine whether 2=0. If so, (b) Find the associated stream function

Consider the polar-coordinate velocity potential φ = Br1.2cos (1.2θ), where B is a constant.
(a) Determine whether 2φ=0. If so,
(b) Find the associated stream function ψ (r, θ) and
(c) Plot the full streamline which includes the x-axis (θ = 0) and interpret.

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