Advertisements
Advertisements
Question
An inflated balloon is placed inside a big glass jar which is connected to an evacuating pump. What will you observe when the evacuating pump starts working? Give a reason for your answer.
Solution
When evacuating pump starts working, pressure inside the glass jar reduces. As the pressure inside the balloon is more than pressure outside the balloon inside the glass jar, so balloon with burst.
APPEARS IN
RELATED QUESTIONS
A body of density ρ is immersed in a liquid of density ρL. State the condition when the body will (i) float and (ii) sink in the liquid.
A body of volume 100 cm3 weighs 5 kgf in air. It is completely immersed in a liquid of density 1.8 × 103 kg m-3. Find:
- The upthrust due to liquid and
- The weight of the body in liquid.
A piece of brass weighs 175 gf in air and 150 gf when fully submerged in water. The density of water is 1.0 g cm-3.
(i) What is the volume of the brass piece? (ii) Why does the brass piece weigh less in water?
A piece of iron weighs 44.5 gf in air. If the density of iron is 8.9 × 103, find the weight of iron piece when immersed in water.
Explain why an iron nail floats on mercury, but it sinks in water.
Hint : Density of iron is less than that of mercury, but more than that of water.
A loaded cargo ship sails from sea water to river water. State and Explain your observations.
Explain the following :
A balloon filled with hydrogen rises to a certain height and then stops rising further.
A body of mass ‘m’ is floating in a liquid of density ‘p’
what is the apparent weight of body?
Select the correct option:
The ratio between the mass of a substance and the mass of an equal volume of water at 4°C is called:
Select the correct option:
A body has density 9.6 gcm -3. Its density in SI system is:
