The radius of the Earth at its equator is 6.37x106 m. The radial distance of Detroit, Michigan from the Earth’s axis of rotation is 5.0x106 m. Determine

a. the distance the residents 0f Quito, the capital of Ecuador, which is located on the equator and

Detroit, Michigan travel in one day.

b. the tangential speeds of Quito and Detroit, Michigan.

c. the angular speed (in rad/sec) of both Quito and Detroit.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

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 =