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How much pressure do we carry on our hea...

How much pressure do we carry on our heads ? Why don't we feel it ?

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  1. Why do some people have earache when they travel by an aeroplane ?

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  2. Explain why a person may bleed from the nose when at a great height ab...

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  3. How much pressure do we carry on our heads ? Why don't we feel it ?

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  4. When a rubber sucker is pressed onto a flat glass surface, it sticks t...

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  5. Describe a simple experiment to demonstrate atmospheric pressure.

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  6. Explain the working of an ink dropper.

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  7. Why is the opening of a dropper very narrow ?

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  8. What is the characteristics of the cap of eye drop bottles ?

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  9. Explain the working of a syringe used by children when they play with ...

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  10. How does the doctor's syringe work ?

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  11. Explain the origin of pressure due to a gas enclosed in a container.

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  12. Define buoyant force.

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  13. State the factors on which the buoyant force depends.

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  14. A lemon sinks in a glass filled with water but it floats when we stir ...

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  15. State Archimedes' principle.

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  16. Write proper word in the blank space : According to Archimedes' prin...

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  17. Using the formula for the magnitude of the buoyant force, state under ...

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  18. Using the formula for the magnitude of the buoyant force, state under ...

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  19. Using the formula for the magnitude of the buoyant force, state under ...

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  20. State the applications of Archimedes' principle.

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