I am studying for an upcoming test, and it is known that there are hiccups in our study guide. I am stuck on two problems. 1. The problem statement, all variables and given/known data 1. What is the frequency, in Hz, of a sound wave (v=340 m/s) with a wavelength of 10 m? 2. A series of ocean waves, each 8 m from crest to crest and moving past an observer at a rate of 2 waves per second, has what speed? 2. Relevant equations 1. Frequency= 1 / Period 2. V = Lambda / Period 3. The attempt at a solution 1. I get the answer .029, but the study guide says 0.0029 Hz? 2. I get the answer 4, but study guide says 16? Any help is appreciated!