I can start work on that question as soon as you show me the diagram.
Doppler's effect does not happen when the observer is moving towards the source because unlike the source when observer moves forward the waves are not compressed and they pass the observer without being compressed and since the doppler effect is due to the Change in wavelength of the wave, it fails to occur.
For the sound from a source not to be shift in frequency , the radial velocity of the source to the observer must be zero : that is the source must not be moving towards or away from the observer
The frequencies are the same, unless the source is moving relative to the observer.
Yes that is the case.
The redshift is caused by relative motion that increases the distance from the source to the observer. The faster the source of light is moving away to the observer, the greater the redshift
You will need to undress to the point so that your observer can positively identify the urine exiting your body, but other than that, no.
Observer is a noun.
The German translation of observer is Beobachter.
Jacksonville Observer was created in 2009.
Salem Observer was created in 1823.
Salem Observer ended in 1919.
Harrow Observer was created in 1855.
Peninsula Observer was created in 1967.
Leitrim Observer was created in 1904.
Argus Observer was created in 1897.
Liberian Observer was created in 1981.
Rugby Observer was created in 1991.