The questions are the same as those on the exam. Their order is different due to this electronic KEY being printed at a different time.
Answer is shown as italic.
A cello string 0.75 m long has a fundamental frequency of 220 hertz. A 60-vibration per second wave travels 30 meters in 1 second. 30 hertz and its wavelength is 30 m. 7. A floating leaf oscillates up and down two complete cycles in one second as a water wave passes by. The wave's wavelength is 10 meters.