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Explain why holes are made in hanging ba...

Explain why holes are made in hanging banners and hoardings.

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### Step-by-Step Solution: 1. **Understanding Air Pressure**: - Air exerts pressure in all directions. This means that when a banner or hoarding is hung, the air around it applies pressure on its surface from all sides. 2. **Effect of Air Pressure on Banners**: - When there is a strong wind, the air pressure can push against the banner or hoarding. If the banner is solid and does not allow air to pass through, the pressure can build up significantly on one side. ...
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