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Water flows through a horizontal tube of diameter 2.7 cm that is joined to a second horizontal tube of diameter 1.9 cm. The pressure difference between the tubes is 7.6 kPa.

Find the speed of flow in the first tube.
v_1 = ? m/s

I've tried using P_1 + .5 * density * v_1^2 = P_2 + .5 * density * v_2^2 where the density of water is 1000kg/m^3 and also the equation v_2 = v_1 * (d_1^2 / d_2^2), but I keep getting the answer .07m/s (which is wrong btw).

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