Afan at a rock concert is 50.0 m from the stage, and at this point the sound intensity level is 114 db. 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 mm/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).

A)

B)

C)

D) mosquitoes speed in part B is very much larger than that of part C.

Explanation:

Given:

(A)

Now the intensity of the sound at the given location is related mathematically as:

..........................................(1)

As we know :

is the energy transferred to the  eardrums per second.

(B)

mass of mosquito,

Now the velocity of mosquito for the same kinetic energy:

(C)

Given:

Using eq. (1)

Now, power:

Hence:

(D)

mosquitoes speed in part B is very much larger than that of part C.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.