If the intensity increased by a factor of 20, byhow may decibels is the sound level increased?

Explanation

To solve the problem of how many decibels the sound level increases when the intensity is increased by a factor of 20, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship Between Intensity and Decibels**:
The sound level in decibels (dB) is given by the formula:
\[
b = 10 \log \left( \frac{I}{I_0} \right)
...