Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is `13.6 "g cm"^(-3)`

Explanation

To solve the problem of calculating the height of a water column that exerts the same pressure at its base as a 70 cm column of mercury, we can follow these steps:

### Step 1: Understand the relationship between pressure, density, and height
The pressure exerted by a fluid column can be expressed using the formula:
\[ P = \rho g h \]
where:
- \( P \) is the pressure,
- \( \rho \) is the density of the fluid,
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