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if a machine gives you a mechanical advantage of 4 and the input force is 10, what is the force output?

a.6 newtons
b. 2.5 newtons
c.40 newtons \

2. which of the following is an expression of power?

a. j/s
b. n
c. n-m

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 =