What is the velocity of e.m. waves in free space?

The velocity of electromagnetic waves in free space is 3 xx 10^8 m s^(-1) .The frequency of a radio wave of wave length 150 m is

How does the relation c=frac(1)(sqrt(mu_0 epsilon_0) indicate that the velocity of all types of e.m. waves in free space is the same?

What is the velocity of wave in a sting of line or mass density m when strotched to tension T?

What is the velocity of wave in monoatomic gas having pressure 1 kilo-pascal and densitry 2.6 kg/m^3 ?

What is the value of permeability of free space?

Write an expression for speed of e.m. waves in free space.

Electromagnetic waves of frequency 5 xx 10^(14) Hz are passed through a liquid.The wavelength of the waves in liquid is measured to be 4.5 xx 10^(-7) m . Calculate velocity of e.m. waves in the liquid and

State the principle of production of e.m. waves. What is the value of velociy of these waves?

A boat strikes waves of ocean having crest 100 m away. The wave velocity of crest is 20ms^-1 . What is the frequency of waves striking the boat ?