Question: 3. A flow is represented by the potential as -20r cos 0+40 Inr. (a) Get the free-stream velocity (b) Calculate the strength of source;

3. A flow is represented by the potential as -20r cos 0+40 Inr. (a) Get the free-stream velocity (b)

3. A flow is represented by the potential as -20r cos 0+40 Inr. (a) Get the free-stream velocity (b) Calculate the strength of source; (c) Get the position of stagnation point; (d) Get the stream function of the flow; (e) Obtain the equation of dividing streamline by using the stream function.

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