A bow of spring constant 500 N/m is pulled back so that the bowstring extends by 0.50 m. Calculate the elastic potential energy stored in the bow

f=ma newton's second law 7x8=56n

that would be because of both gravity and friction. so     c

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 =