Flow of an incompressible fluid is in the ry plane, and the y component of the veloc- ity, v, is given by v = 2y. (a) determine the required functional form of the velocity field. (b) give a particular velocity field that satisfies the required functional form.

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600