Q2 (20 pts): A smooth transition section connects two rectangular flat channels. The upstream channel has a width of 5.0 ft and a water depth of 2 ft. If the flow

rate in the channel is 30 cfs: a) Determine the minimum width the channel can have in section 2 so that conditions upstream remain unchanged. Neglect head losses. b) If the channel width in the downstream conditions is 2 ft, show the change in upstream conditions graphically. Neglect head losses.