21. suppose that a particular machine in a factory has two steel pieces that must rub against
each other at a constant speed. before either piece of steel has been treated to reduce
triction, the force necessary to get them to perform properly is 5.8 n. after the pieces
have been treated with oil, what will be the required force?

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 =

can u provide the graph and if its not possible

then i can tell u the segment where the

average time interval starts degrading is the segment where the car is slowing down