Gina wheels her wheelchair up a ramp using a force of 80 newtons . if the ramp has a mechanical advantage of 7 what is the output force in newtons

tube or goog with be a great resource to with that question

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 =