1. On a distant planet small-amplitude waves travel across a 1-m-deep pond with a speed of 5 m/s. Determine the acceleration of gravity on the surface of that planet.
2. The flowrate in a 50-ft-wide, 2-ft-deep river is Q = 190 cfs. Is the flow subcritical or supercritical?
3. The flowrate per unit width in a wide channel is q = 2.3 m2/s. Is the flow subcritical or supercritical if the depth is (a) 0.2 m,
(b) 0.8 m, or
(c) 2.5 m?