Sound waves travel through kerosene at `1330 m//s`. Density of kerosene is `8 xx 10^2 kg//m^3`. Calculate its coefficient of elasticity.

What will be the approximate terminal velocity of a rain drop of diameter 1.8xx10^-3 m , when density of rain water ~~10^3 kg. m^-3 and the coefficient of viscosity of air ~~1.8xx10^-5 N.s. m^-2 ?(Neglect buoyancy of air)

An oil drop of density 950 kg. m^-3 and radius 10^-6 m is falling through air. The density of air is 1.3 kg. m^-3 and its coefficient of viscosity is 181xx10^-7 SI unit. Determine the terminal velocity of the oil drop. [g=9.8m. S^-2]

The relative density of gold is 19.3. if the density of water be 10^(3) kg/ m^(3) , calculate the density of gold in SI unit.

Density of water is 1000 kg//m^(3) . If relative density of iron is 7.874 calculate the density of iron

A granite rod of 60 cm length is clamped at its middle point and is set into longitudinall vibrations. The density of granite is 2.7 xx 10^(3) kg//m^(3) and its Young's modulus is 9.27 xx 10^(10) Pa. What will be the fundamental frequency of the longitudinal vibrations?

Calculate the molarity of water if its density,is 1000 kg//m^3 .

When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electron a 2.5 times 10^-4m//s IF the electron density in the wire is 8 times 10^28 m^-3 , the resistivity of the material of wire.

When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electron a 2.5 times 10^-4 m.s^-1 . IF the electron density in the wire is 8 times 10^28 m^-3 , the resistivity of the material is close to