the density and atomic weight of copper is 8900 kgm^-3 and 63.5 respectively the relaxation time of electrons in copper at 300 k is 10^-14 calculate the electrical conductivity of copper
Answers
Explanation:
2.375×10^7ohm^-1 m^-1
Answer:
The correct answer is 4.27m/s
Explanation:
The following datas are given for copper
Density = 8.92 × 103 kgm–3
Resistivity = 1.73 × 108 m
iii)Atomic weight = 63.5 kg
To simplify comparisons of density across distinctive structures of units, it's far every so often changed with the aid of the dimensionless amount "relative density" or "particular gravity", i.e. the ratio of the density of the fabric to that of a preferred cloth, commonly water. consequently a relative density less than one relative to water method that the substance floats in water.
The density of a cloth varies with temperature and strain. this alteration is normally small for solids and beverages but much more for gases. growing the strain on an object decreases the extent of the object and thus will increase its density. growing the temperature of a substance (with some exceptions) decreases its density by using growing its quantity. In most substances, heating the bottom of a fluid outcomes in convection of the heat from the lowest to the pinnacle, because of the decrease within the density of the heated fluid, which reasons it to rise relative to denser unheated material.
The reciprocal of the density of a substance is sometimes known as its particular extent, a time period occasionally used in thermodynamics. Density is an intensive assets in that growing the amount of a substance does no longer growth its density; as an alternative it will increase its mass.
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