You have a charge of 6x10^-3 C sitting in your room 3 meters from your computer screen. a) What is the size of the electric field at the location of the screen due to the
charge?
b) What force would an electron located in your screen feel due to this field?
(q =-1.6x10^-19 C)

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

mass and volume are the answers you are looking for

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 =