Suppose you have one magnet in a straw with its South pole pointed upward. What would happen if you put another magnet into the straw with it's North pole pointed downward?
a. The magnets would be attracted to each other.
b. The magnets would become demagnetized,
c. The second magnet would be pushed out of the straw.
d. The magnets would repel each other.

f=gm1m2/d^2 it d

f is force g is gravitaiton constant, m1 is mass of first object, m2 is mass of second object. d is distance between two object

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

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 =

there are no atoms