3. (12 pts.) When two thundersticks are hit sharply together, they produce a lot of noise. A typical thunderstick is 82 cm long and 8.5 cm diameter. a. Estimate (show calculations) the fundamental frequency of the thunderstick's sound. b. If a single pair of thundersticks produced sound with an intensity level of 95 dB, calculate the intensity level of 1200 pairs of thundersticks clapping simultaneously