Write the dimensions of coefficient of viscosity and surface tension.

Explanation

To find the dimensions of the coefficient of viscosity (η) and surface tension (σ), we can follow these steps:

### Step 1: Understand the Coefficient of Viscosity
The coefficient of viscosity (η) is defined in the context of Newton's law of viscosity, which states:
\[ F = \eta \frac{dv}{dx} \]
where:
- \( F \) is the force applied,
- \( \eta \) is the coefficient of viscosity,
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