An ambulance driving with velocity v/8 where v is the speed of sound, emits a siren with a frequency of . what is the frequency heard by a stationary observer toward whom the ambulance is driving?

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.