If two firecrackers produce a sound level of 86 db when fired simultaneously at a certain place, what will be the sound level if only one is exploded? [hint: add intensities, not db's.]

What produces a record of seismic waves? richter scale seismogram barometer seismograph

What is the relationship between the wavelength of a wave and it's energy?

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as