How long would it take a radio wave of frequency `6xx10^(3) sec^(-1)` to travel from mars to the earth, a distance of `8xx10^(7)km` ?

How long would it take a radio wave of frequency, 6.2xx10^(3)s^(-1) to travel from Mars to Earth, the distance being 8.1xx10^(7)km ?

In an electromagnetic wave, how are electric vector (vecE) , magnetic vector (vecB) and velocity of propagation of the wave (vecc) oriented ? How long would gamma radiation take to travel from sun to earth, a distance of 1.5xx10^(11)m?

What is wavelength (in metre) of radio wave of frequency 1.5xx10^8 Hz ?

How long will it take for a sound wave of 25 cm wavelength and 1.5 kHz frequency, to travel a distance of 1.5 km?

The frequency of a wave light is 1.0 xx 10^(6)sec^(-1) . The wave length for this wave is

Light travels at a speed of 3 xx 10^8 m s^(-1) . How long does light take to reach the earth from the sun, which is 1.5 xx 10^11 m away?