Consider the velocity field of Problem 2.18. Plot the streamline formed by particles that passed through the point (1, 1) during the interval from t = 0 to t = 3 s. Compare with the streamlines plotted through the same point at the instants t = 0, 1, and 2 s.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Fluids at rest possess no flow energy. a)- true b)- false

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk