Which of the following sources would be most likely to have reliable data

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d. higher