The fossil record shows that modern horses are taller and have their heads in a more elevated position than their ancestors did millions of years ago. one explanation for this could be that the horse’s diet changed gradually over time and that being taller and better able to see, bettered their chances to find food and survive. true/false

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.