A ring of charge is centered at the origin in the vertical direction. The ring has a charge density of λ = 4.48 × 10 − 6 C/m λ=4.48×10−6 C/m and a radius of R = 2.71 cm. R=2.71 cm. Find the total electric field, E , E, of the ring at the point P = ( 1.10 m, 0.00 m). P=(1.10 m, 0.00 m). The Coulomb force constant is k = 1 / ( 4 π ϵ 0 ) = 8.99 × 10 9 N ⋅ m 2 / C 2 .

where’s the list ? the question is incomplete

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 =