It water flows horizontally through a pipe of varying cross section and the pressure of water equals `10 cm` of g at a point where the velocity of flow is `40 cm//s`, what is the pressure at another point where the velocity of flow is `50 cm//s`?

Explanation

To solve the problem, we will use Bernoulli's equation, which states that for an incompressible fluid flowing through a horizontal pipe, the sum of the pressure energy, kinetic energy, and potential energy per unit volume remains constant. Since the pipe is horizontal, we can ignore the potential energy term.

### Step-by-Step Solution:

1. **Write down Bernoulli's equation for two points in the pipe:**
\[ P_1 + \frac{1}{2} \rho v_1^2 = P_2 + \frac{1}{2} \rho v_2^2 \]
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