Match the correct approximation(s) on the right with each statement on the left. note that a is thewidth of a single slit andλis the wavelength of light incident on that slit. i.a < < λa. the ray approximation is no longer valid. light is wavelike. ii. a≈λb. the primary effect of the opening is to act like a point source of waves. iii. a > > λc. the primary effect of the opening is minimal; light travels in a straight line through it. d. the primary effect of the opening is to diffract the light.

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 =

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015