1. Jun 19, 2016 #1

   foo9008

   

   1. The problem statement, all variables and given/known data
   
   in this question , the Pressure at entrance is not given , how to do this?
   
   2. Relevant equations
   
   
   3. The attempt at a solution
   does the author mean the pressure at entrance = pressure at exit

    

   foo9008, Jun 19, 2016
2. 
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3. Jun 19, 2016 #2

   billy_joule

   

   Science Advisor

   You are expected to find it from the depth of the tank.

    

   billy_joule, Jun 19, 2016
4. Jun 19, 2016 #3

   foo9008

   

   i am going to use this equation to solve this question , where z = 10 m what is the pressure at ENTRANCE ? it's not given
   
   p/s : hf = 0

    

   foo9008, Jun 19, 2016
5. Jun 19, 2016 #4

   billy_joule

   

   Science Advisor

   It's unclear where the two points on your streamline are.pipe entry and exit? Or free surface and pipe exit?
   If z=0 is along the pipe axis then z=10 is the water surface, and the pressure there is equal to the exit pressure so both can be set to zero.

    

   billy_joule, Jun 19, 2016

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