What is the direction and magnitude of the Electric Field due to a -6.8 u point charge at a distance of 7.4 m?

b

explanation:

bc its just b

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

not too sure thinking all accelerations are pointed down

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 =