The stream function of a two-dimensional, incompressible flow field is given by v=axy, where x and y are in meters, and a is a dimensional constant, 5/s· dy find the x and y components of velocity in this flow field, named u and v, respectively, at (x, y) (2, 1). ii) calculate the acceleration of a fluid particle at the point (x, ,1). (iii) is the flow steady? (iv) is the flow irrotational?

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a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.