1. Two forces act on a box as follows: F= 100 N at 02 = 170. and F2= 75 N at O2 = 30. Find their resultant force on the box.
(a) the magnitude of vector sum Fi + F
(b) the direction of of the vector sum F1+F2​

yfv.

Explanation:

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 =