The orbital period of a satellite is 2 x 10^6 s and its total radius is 2.5 x 10^12 m. The tangential speed of the satellite is ? m/s.

(Round to the nearest whole number, do not add any
punctuation.)

a 2,000 calorie based diet.

+15-35=-20

going in opposite directions

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 =