Calculate the speed at which the velocity of stream of water will be equal to 30 cm of mercury column.

Explanation

To solve the problem of calculating the speed at which the velocity of a stream of water will be equal to a 30 cm mercury column, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Velocity Head**:
The velocity head is the height of a fluid column that corresponds to the kinetic energy of the fluid. It can be expressed using the formula:
\[
\text{Velocity Head} = \frac{V^2}{2g}
...