(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] River channel problem using Bernoulli and Continuity

1. The problem statement, all variables and given/known data

A river (100 m wide) flows through its rectangular channel at a depth of 2.560 m at a velocity of 2.050 m/s. What is the velocity of the discharge if the channel is narrowed to 90 m?

2. Relevant equations

Continuity equation: Q1 = 100m x 2.560 m x 2.050 m/s

Q2 = 90 m x H2 x V2

Bernoulli equation: V^2/2g + P/pg + z = constant

3. The attempt at a solution

I can't seem to set up the equations properly in order to find intercept. I'm sure that P1 (ie. pressure1) is zero, but P2 isn't. I actually tried solving the question with P2=0 but it's wrong.

A little help?

(you may have seen this in "Introductory Physics" but I don't know how to move/delete the previous thread, sorry)

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# River channel problem using Bernoulli and Continuity

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