One end of a copper rod 30 cm long is held at 200C, and the other end is held at 93C. The heat transfer coefficient in between is 17 W/m squared K (including both convection and radiation). if T infinity = 38C and the diameter of the rod is 1.25 cm, what is the net heat removed by the air around the rod?

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

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 =