You have built a device that measures the temperature outside and displays it on a dial as a measure of how far away from room temperature outside is. the way the dial works is that a needle with a charged ball on the end is placed between two charged parallel plates. the strength of the uniform electric field between the plates is proportional to the outside temperature. given that the charged ball on the needle has a charge of?

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.