An airplane of mass 2180 kg flies over pineview reservoir, located 131 km due north of byu's west mountain observatory . both the plane and the observatory are at an elevation of 2120 m above sea level. the airplane is flying level with a speed of 260 km/hr towards the east.
(a) what is the magnitude of the plane's angular momentum with respect to the observatory?
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current flows in a wire

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 =