Advertisements
Advertisements
Question
An iron nail sinks in water but it floats in mercury. Why ?
Solution
An iron nail sinks in water because the density of iron (7,900 kg/m3) is more than the density of water (1,000 kg/m3). Whereas the density of mercury (13,600 kg/m3) is more than the density of iron, so the iron nail floats in mercury.
APPEARS IN
RELATED QUESTIONS
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?
Fill in the blank with suitable word :
A heavy ship floats in water because its....................density is less than that of water.
A mug full of water appears light as long as it is under water in the bucket than when it is outside water. Why ?
Why does a ship made of iron and steel float in water whereas a small piece of iron sinks in it ?
Name the force the upward push of water on a submerged object .
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 `1/2` kg sheet of tin sinks in water but if the same sheet is converted into a box or boat, it floats. Why?
Consider the following information in respect of four objects A, B, C and D :
| Object | Density(kg/m3) | Volume(m3) | Mass(kg) |
| A | 2 | 4000 | |
| B | 8000 | 4 | |
| C | 2000 | 1000 | |
| D | 4 | 2000 |
Which object would float on water ?
Choose the odd one:
