Why do the window panes break and fall out wards and the curtains over the open windows move out of the room and not into the room when strong winds blow along the sides of a building?

Explanation

To understand why window panes break and curtains move outward when strong winds blow along the sides of a building, we can analyze the situation using the principles of pressure and airflow.

### Step-by-Step Solution:

1. **Understanding Air Pressure**:
- When the wind blows strongly along the sides of a building, it creates a difference in air pressure between the inside and outside of the building.
- According to Bernoulli's principle, as the speed of the air increases, the pressure decreases. Therefore, the faster-moving air outside the building results in lower pressure (P2) compared to the pressure inside the building (P1).

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