Advertisements
Advertisements
प्रश्न
A plastic cube is released into the water. Will it sink or come to the surface of the water?
उत्तर
- When dropped into water, the plastic cube floats on the top rather than sinking. The term "buoyancy phenomenon" refers to this.
- When compared to other objects, plastic has a high rate of buoyancy and is water-repellent. Plastic naturally floats on the water's surface because it is lighter than water.
- The same experiment will result in a glass cube sinking because it weighs more than the liquid it is released into.
संबंधित प्रश्न
What do you mean by buoyancy?
What physical quantity is measured in bar?
How is the unit bar related to the S.I. unit pascal?
Describe a simple experiment to demonstrate that a liquid enclosed in a vessel exerts pressure in all directions.
Why do sea divers need special protective suit?
A body will experience minimum upthrust when it is completely immersed in :
You are provided with a hollow iron ball A of volume 15 cm3 and mass 12 g and a solid iron ball B of mass 12 g. Both are placed on the surface of water contained in a large tub.
- Find upthrust on each ball.
- Which ball will sink? Give a reason for your answer (Density of iron = 8.0 g cm-3)
A beaker contains a liquid of density ‘ρ’ up to height ‘h’ such that ‘PA’ is atmospheric pressure and ‘g’ is the acceleration due to gravity. Answer the following questions:
- What is the pressure on the free surface of the liquid?
- What is the pressure on the base of the beaker?
- What is the lateral pressure at the base on the inner walls of the beaker?
Icebergs and ships stay afloat due to ______.
The center of gravity of the floating body and the center of buoyance are in the same ______ line.