Question: A liquid-air interface is described by the function = (' + '), where is the height of the interface and is a constant. This function

A liquid-air interface is described by the function = (' + '), where is the height of the interface and is a constant. This function represents a parabolic surface. The surface tension of the liquid is . (a) Calculate the divergence of the normal vector, , at the origin ( = 0, = 0). (b) Use your result from Part (a) to calculate the Laplace pressure at the origin

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