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Question: please help me this questions many thanks...

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Please help me this questions, many thanks.​​​​​​​​

(2) Consider the velocity field v--yi+j. Evaluate the line integral Je v.n dS directly to calculate the net outward flux across a positively oriented circle of radius 1 centred at x-1,y - 0. In addition, report the net outward flux through the boundary of the lower and upper half-discs, where the upper and lower semi-circles are connected by a line along the x-axis. You can visualise the curve and field using the following simultation: https://ggbm.at/ZnAQtC4U What happens if you move the circle and change its radius?

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