the time for the material to life of the substance is given, then 4 = 4. ( ) " where amount after time initial amount half-life of the object time, must have the same unit as / used in nuclear medicine imaging techniques. The half-life of 8.04 days. I found within a person, how long has it been received ? Round your answer to a whole 4. Sound intensity is measured in decibels (dB) using the following equation: aB - 10 log () Where dB stands for decibels, / stands for the measurement of the intensity of the sound in watts/m', and lo stands for the threshold level of sound, which i faintest sound that a human can hear, and it is a measurement of 10 12 watts/m?. A sound is considered deafening if it is above 110 dB If you go to a rock concert, and the measurement of intensity / is 0.316 watts/my would the concert be considered deafening? Find the sound intensity in decibels rounded to a whole number