You are driving up a long ,inclined road. After 1.50 mi you notice that signs along the roadside indicate that your elevation has increased by 520 ft A) What is the angle of the road above the horizontal?
B) How far do you have to drive to gain an additional 160 ft of elevation ?
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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 =