An astronomer is trying to estimate the surface temperature of a star with a radius of 5.0�108m by modeling it as an ideal blackbody. The astronomer has measured the intensity of radiation due to the star at a distance of 2.5�1013m and found it to be equal to 0.055W/m2. Given this information, what is the temperature of the surface of the star?Express your answer in kelvins to two significant digits.

unlike poles attract

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 =