- Machine parts are jammed in cold days. Why?
- During certain windstorm, light roofs are blown off, why?
- Define viscosity. Does it depend on temperature?
- When a smooth-flowing stream of water comes out of a faucet, it narrows as it falls. Explain why this happens.
- Explain why a suction effect is experienced by a person standing close to the platform at a station when a fast train passes.
- Why does a flag flutter on strong wind?
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