# PhysicsBernoulli`s Equation

#### jc91

##### New member
Hi All,

Could anyone advise on how to answer below question (attached). I am struggling big time on this.

#### Attachments

• 57.7 KB Views: 15

#### Klaas van Aarsen

##### MHB Seeker
Staff member
Hi All,

Could anyone advise on how to answer below question (attached). I am struggling big time on this.

Hi jc91 , welcome to MHB!

$$\frac 12 \rho v_1^2 + \rho g z_1 + p_1 = \frac 12 \rho v_2^2 + \rho g z_2 + p_2$$
Or do you perhaps have a different version of it?

Since (2) is a stagnation point, we have $v_2=0$.
The pressure is identified by the column of water above it: it's the weight per surface area.
And additionally we have the standard pressure of air ($p_0$).
So for instance $p_1 = p_0 + \rho g (h_1 + h_2)$.

How far do you get filling in the other variables and solving for $v_1$?

#### Ackbach

##### Indicium Physicus
Staff member
Question for jc91 : what is underneath the blue scribble?