The loudness level of a sound, D, in decibels, is given by the formula D = 10 log(1012I), where I is the intensity of the sound, in watts per meter2. Decibel levels range from 0, a barely audible sound, to 160, a sound resulting in a ruptured eardrum. (Any exposure to sounds of 130 decibels or higher puts a person at immediate risk for hearing damage). Use the formula to solve, The sound of a blue whale can be heard 500 miles away, reaching an intensity of 6.3 * 106 watts per meter2. Determine the decibel level of this sound. At close range, can the sound of a blue whale rupture the human eardrum?

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