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Explain the following: A balloon filled...

Explain the following:
A balloon filled with hydrogen rises to a certain height and then stops rising further.

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ICSE-UPTHRUST IN FLUIDS, ARCHIMEDES' PRINCIPLE AND FLOATATION-EXERCISE 5(c)
  1. A homogeneous block floats on water a. Partly immersed b. completely i...

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  2. Fig shows the same block of wood floating in three different liquids A...

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  3. What is the centre of buoyancy? State its position for a floating body...

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  4. A balloon filled with helium gas floats in a big closed jar which is c...

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  5. A block of wood is so loaded it just floats in water at room temperatu...

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  6. A body of volume V and density PS, floats with volume v inside a liqui...

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  7. Two identical pieces, one of ice (density =900kgm^(-3)) and other of...

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  8. Why is floating ice less submerged in brine than in water?

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  9. A man first swims in sea water and then in river water. (i) compare ...

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  10. An iron nail sinks in water while an iron ship floats on water.Explain...

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  11. What can you say about the average density of a ship floating on water...

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  12. A piece of ice is floating in a glass vessel filled with water. How wi...

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  13. A buoy is held inside water contained in a vessel by tying it with a t...

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  14. A loaded cargo ship sails from sea water to river water? State and exp...

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  15. Explain the following: a. Icebergs floating in sea are dangerous for...

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  16. Explain the following: An egg sinks in fresh water, but floats in a s...

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  17. Explain the following: A toy balloon filled with hydrogen rises to th...

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  18. Explain the following: As a ship in harbour is being unloaded, it slo...

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  19. Explain the following: A balloon filled with hydrogen rises to a cert...

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  20. Explain the following: A ship submerges more as it sails from sea wat...

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