A groove on a monophonic phonograph record wigges laterally such tht its amplitude and frequency more or less ocresspond to the sound that is recorded. If at a given moment the needles is moving through the groove at 0.50 m/s, what would be the wiggle wavelength for a 1.5 kHz tone? Book anwer is 3.3 x 10^-4 m. Please show steps.