1. The problem statement, all variables and given/known data There is a water wave having a speed of .25 meter per second that causes a cork to move up and down 4.0 times in 8 seconds what is the wavelength of the water wave 2. Relevant equations v=f times wavelength T=1/f x=vt 3. The attempt at a solution I used the formula wavelength =v/f and I plugged v for 0.25 m/s. For frequency I plugged 8 seconds but Idk think I did that part right. I'm alittle confused on what 4.0 times in 8 seconds is? Like is it the period?