physics

A horizontal pipe of diameter 0.845 m has a
smooth constriction to a section of diameter
0.507 m. The density of oil flowing in the pipe
is 821 kg/m3 .
If the pressure in the pipe is 8350 N/m2
and in the constricted section is 6262.5 N/m2 ,
what is the rate at which oil is flowing?

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