English

The density of iron is 7.8 x 103 kg m-3. What is its relative density?

Advertisements
Advertisements

Question

The density of iron is 7.8 x 103 kg m-3. What is its relative density? 

Sum
Advertisements

Solution

Density of iron = `7.8 xx 10^3` kgm-3

Density of iron in C.G.S = 7.8 gcm-3

R.D. = Density of C.G.S. (without unit) = 7.8

shaalaa.com
Determination of Relative Density of a Solid Substance by Archimedes’ Principle
  Is there an error in this question or solution?
Chapter 5: Upthrust in Fluids, Archimedes’ Principle and Floatation - Exercise 5 (B) [Page 117]

APPEARS IN

Selina Concise Physics [English] Class 9 ICSE
Chapter 5 Upthrust in Fluids, Archimedes’ Principle and Floatation
Exercise 5 (B) | Q 3 | Page 117
Frank Physics Part 1 [English] Class 9 ICSE
Chapter 4 Fluids
Exercise 2 | Q 39 | Page 175

RELATED QUESTIONS

A sphere of iron and another sphere of wood of the same radius are held under water. Compare the upthrust on the two spheres.

[Hint: Both have equal volume inside the water].


A sphere of iron and another of wood, both of same radius are placed on the surface of water. State which of the two will sink? Give a reason for your answer. 


Complete the following sentence.

S.I. unit of density is .......... .


A body weighs W1gf in air and when immersed in a liquid it weighs W2gf, while it weights W3gf on immersing it in water. Find:

  1. volume of the body
  2. upthrust due to liquid
  3. relative density of the solid
  4. relative density of the liquid

A piece of stone of mass 113 g sinks to the bottom in water contained in a measuring cylinder and water level in cylinder rises from 30 ml to 40 ml. Calculate R.D. of stone.


A stone of density 3000 kgm3 is lying submerged in water of density 1000 kgm3. If the mass of stone in air is 150 kg, calculate the force required to lift the stone. [g = 10 ms2]


A glass cylinder of length 12 x 10-2 m and area of cross­section 5 x 10-4 m2 has a density of 2500 kgm-3. It is immersed in a liquid of density 1500 kgm-3, such that 3/8. of its length is above the liquid. Find the apparent weight of glass cylinder in newtons.


A cube of the lead of side 8 cm and R.D. 10.6 is suspended from the hook of a spring balance. Find the reading of spring balance. The cube is now completely immersed in sugar solution of R.D. 1.4. Calculate the new reading of spring balance.


An iceberg floats in sea water of density 1.17 g cm 3, such that 2/9 of its volume is above sea water. Find the density of iceberg.


Calculate the mass of a body whose volume is 2m3 and relative density is 0.52.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×