2) Un nadador enciende una lámpara bajo el agua y la dirige hacia la superficie. Su luz llega a la superficie de separación aire-agua a 35°.
¿Cuál es el valor del ángulo con que refracta al aire?

that would be because of both gravity and friction. so     c

the maxium height is 34m/s

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 =

where is the