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(a) When does the stream function satisfy the Laplace Equation? [2 Marks] (b) List and explain two examples of the Marangoni effect. [2 Marks] (c)

(a) When does the stream function satisfy the Laplace Equation? [2 Marks]

(b) List and explain two examples of the Marangoni effect. [2 Marks]

(d) Draw the rheological diagram of the liquids that experience an increase in viscosity with motion, clearly indicate the variables on the axes? [2 Marks]

(e) Under what condition(s) does a flow between two plates have zero pressure gradient? [2 Marks]

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