Column a is on the x axis, and column b is on the axis which titles should replace a and b? column a should be "time," and column b should be "position column a should be "position and column b should be "time. column a should be velocity and column b should be "speed." column a should be speed." and column b should be velocity

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.