A fan at a rock concert is 30.0 m from the stage, and at this point the sound intensity level is 109dB. 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.
A) How much energy is transferred to her eardrums each second ?
B) How fast would a 2.00 mg mosquito have to fly to have this much kinetic energy
C) How fast a typical 2.0 mg mosquito would have to fly (in nm/s) to have an amount of energy delivered to the eardrum each second when someone whispers (20 db) a secret in your ear?
D) Compare the mosquito's speeds found in parts (B) and (C).