Explain how sound energy is transferred through the wall without transferring matter. please write like this, the particles vibrate back and forth vigorously but are not transferred
pleas

Explain how sound energy is transferred through the wall without transferring matter. please write like this,

the particles vibrate back and forth vigorously but are not transferred

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =