The scale of Celsius scale Rises by 10 div (10 degree Celsius )what is the rise in temperature in fahrenheit scale?

1 deg C = 9/5 deg F         (compare a rise of 100 to 180)

10 deg C = 9 * 10 / 5 deg F = 18 deg F

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/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 =