1.

The stream function for a flow field is y = 3x2y + (2 + t)y2. The velocity at a point P for position vector r = i + 2j – 3k at time t = 2 will be

A. 19i – 12j
B. 21i – 12j
C. 19i + 22j
D. 21i + 22j
Answer» B. 21i – 12j


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