If the density of copper is `8.9xx10^(3)kg//m^(3)`, find its relative density.

If density of a substance is x kg//m^(3) , find its relative density.

The density of silver is 10.8xx10^(3)" kgm."^(3) and the density of water is 10^(3)"kgm"^(-3) . What is the relative density of Ag ?

The density of copper is 8.9g//cm^(3) . Calculate the relative density of copper. (Given, density of water =1.0g//cm^(3) ).

Define density .What is the SI unit of density ? (b) Define relative density .What is the SI unit of relative density ? The density of turpentine is 840kg//m^(3) .What will be its relative density ? (Density of water =1000 kg //m^(3))

The resistivity of copper at room temperatrue is 1.7xx10^(-8) Omega m . If the free electron density of copper is 8.4xx10^(28) m^(-3) , find the relaxation time for the free electrons of copper. Given m_(e)=9.11xx10^(-31) kg and e=1.6xx10^(-19) C .

An oil drop of radius 10^(-6)m carries a charge equal to that on an electron. If the density of the oil is 2xx10^(3)kg m^(3) , find the electric field required to keep it stationary. Take e=1.6xx10^(-19)C and g=9.8 ms^(-2) .

Calculate the mass of copper required to draw a wire 5 km long having resistance of 5 Omega .The density of copper is 8.9 xx 10^(3) kg m^(-3) and resistance of copper is 1.7xx 10^(-8) Omega m

A uniform copper wire of mass 2.23xx10^(-3) kg carries a current of 1 A when 1.7 V is applied across it. Calculate its length and area of cross-section. If the wire is uniformly stretched to double its length, calculate the new resistance. Density of copper is 8.92xx10^(3) kg m^(-3) and resistivity is 1.7xx10^(-8) Omega m.