Your Guide to The Atom The number of prolons in an alom is equallo the Proton : The & total number of 0 7 거 Li. The number of electrons in a balanced atom is equal to the number of Atomic Symbol: 3 Number: Numberof which is equal to the number of To find the number of neutrons in an atom you subtract the atomic number from the mass number. Neutron Neutrons =

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.