In a steady flow in a long pipe, such as the Alaska oil pipe line, the Eulerian description of the velocity field would express the velocity V in the pipe as:
(A) V(t)
(B) V(r)
(C) V(r, t)
(D) V(r, z)
(B) V(r)
In a steady flow, every dependent variable does not depend on time. In a long pipe, the velocity would depend only on the radial variable r.
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Including relativistic effects, doubling the speed of a object:
a. doubles its momentum. b. more than doubles its momentum. c. less than doubles its momentum. d. has no effect on its momentum.