English

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

Advertisements
Advertisements

Question

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

Sum

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 4: Fluids - Exercise 2 [Page 175]

APPEARS IN

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

RELATED QUESTIONS

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. 


A solid of density 5000 kg m-3 weighs 0.5 kgf in air. It is completely immersed in water of density 1000 kg m-3. Calculate the apparent weight of the solid in water. 


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: (i) volume of the body (ii) upthrust due to liquid (iii) relative density of the solid and (iv) relative density of the liquid.


A solid of area of cross-section 0.004 m2 and length 0.60 m is completely immersed in water of density 1000 kgm3. Calculate:

  1. Wt of solid in SI system
  2. Upthrust acting on the solid in SI system.
  3. Apparent weight of solid in water.
  4. Apparent weight of solid in brine solution of density 1050 kgm3.
    [Take g = 10 N/kg; Density of solid = 7200 kgm3]

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 solid of R.D. = 2.5 is found to weigh 0.120 kgf in water. Find the wt. of solid in air.


A solid of R.D. 4.2 is found to weigh 0.200 kgf in air. Find its apparent weight in water.


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.


The density of mercury is 13600 kg m-3. What is its relative density?

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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×