a)Can you evaluate the work done by the field
F=Mi+Nj+Pk over a 2d region (such as over the unit circle from the
point A(1,0) to the point B(-1,0))
b) Is this a trick : that the points A and B are 2d and not
3d
c)If the field is conservative would the region matter if it's 2D
or 3D
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