Cutnell Physics 7th Ed pg 600 # 39 1. The problem statement, all variables and given/known data A camera flash has a capacitor. Capacitor has a rating of: 850uF The potential difference between the places is: 280V a) Determine Energy used to produce flash. b)If flash lasts 3.9E-9 S, what is the power or wattage of the flash? 2. Relevant equations V=C/F W=VA A=C/S 3. The attempt at a solution a) (280V)(850uF)= 0.238C b) (0.238 C)/(3.9E-3 S)= 61.03A W=??? The back of the book has a) =33J b) 8500W Where did I go wrong? Thanks in advance.