[SOLVED] Sound wave A stone is dropped from rest into a well. The sound of the splash is heard exactly 1.70 s later. Find the depth of the well if the air temperature is 12.0°C. Anything _s is the sound wave, anything _f is the stone falling I tried using these equations: v_s = 331(sqrt(285/273) = 338.2 t_s = x/338.2 1.7 = t_s + t_f x = .5(9.8)t_f^2 I plugged the first equation into the second, solved the second for t_f and plugged that into the last one. Ends up being a nasty quadratic but I'm pretty sure my math is ok. I ended up with .000042841x^2 - .0492x + 14.161 but that gives imaginary solutions. Thanks for the help. EDIT: Nevermind- I forgot to move the x over. Sorry!!!!!!!!!!!