Q. A 45 dB sound wave strikes an eardrum whose area is 4.9 multiplied by 10-5 m2.
(a) How much energy is absorbed by the eardrum per second?
(b) At this rate, how long would it take your eardrum to receive a total energy of 1.0 J?
Q. A 38.00 g bullet is fired with a speed of 180.0 m/s into a 5.000 kg sandbag pendulum that is free to swing. To what maximum vertical height will the pendulum rise?