Water at 600F flows steadily through a horizontal circular divergent duct and discharges into the atmosphere as shown. A manometer with a fluid of SG=2.0 is placed between the two cross-sections with diameters D1 = 0.5 ft and D2 = 0.7 ft. Assuming inviscid flow, determine:

(a) The pressure difference (P2 - P1) at the centerline between these two sections.
(b) The velocities V1 and V2 at the two sections.
(c) The volume flow rate Q, and the velocity V3 at the exit section with diameter D3 = 1 ft.

Is the water really at 600 F? Or do you mean 60 degrees F?

I would need to see the figure to make sense of this. It looks like a place to apply the steady state continuity and Bernoulli equations.