Advertisements
Advertisements
प्रश्न
Why does ice float in water ?
Advertisements
उत्तर
The ice floats on the water because it is less dense than water. A substance floats if it is less dense than the liquid in which it is immersed.
APPEARS IN
संबंधित प्रश्न
Why does a block of plastic released under water come up to the surface of water?
The volume of 50 g of a substance is 20 cm3. If the density of water is 1 g cm−3, will the substance float or sink?
The volume of a 500 g sealed packet is 350 cm3. Will the packet float or sink in water if the density of water is 1 g cm−3? What will be the mass of the water displaced by this packet?
Write the common unit of density.
A mug full of water appears light as long as it is under water in the bucket than when it is outside water. Why ?
Explain why, a piece of glass sinks in water but it floats in mercury.
A beaker full of water is suspended from a spring balance. Will the reading of the balance change if a cork is placed in water ?
A beaker full of water is suspended from a spring balance. Will the reading of the balance change if a piece of heavy metal is placed in it ?
Give reasons for your answer.
A boy get into a floating boat .
What happens to the boat ?
A rectangle wooden block has length, breadth and height of 50 cm, 25 cm and 10 cm, respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?
