if 56 j of work energy is required to lift a dumbbell to a height of 7m, what is the weight of the dumbbell?

8 N

Explanation:

work=force*distance

force=work/distance

=56/7

=8

technology is the application of the knowledge gained by science.

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 =