1. The problem statement, all variables and given/known data Henry and Tom see a flash of lightning and then hear the resulting clap of thunder. Henry measures the sound level of the thunder as 65 dB while Tom, who is 800 m further from the event, measures it as 63 dB. 2. Relevant equations 3. The attempt at a solution I_H / I_T = 1.58 1 / d^2 = 1/1.58 d = sqrt(1 / 1.58) = 0.796 0.796 * 800 = 636 m away, yet the answer is 3090 m. Why?