Afan at a rock concert is 50.0 m from the stage, and at this point the sound intensity level is 108db. sound is detected when a sound wave causes the tympanic membrane (the eardrum) to vibrate. typically, the diameter of this membrane is about 8.40 mm in humans. answer the following:

how much energy is transferred to her eardrums each second ?
how fast would a 2.00 mg mosquito have to fly to have this much kinetic energy?
how fast a typical 2.0 mg mosquito would have to fly (in mm/s) to have an amount of energy delivered to the eardrum each second when someone whispers (20 db) a secret in your ear?