when an object is placed at 2 cm far from the optical centre of a lens with focal length 3 cm the image is formed in the same side of the object which is erect, virtual, and enlarged if so what type of lens is it?

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

i'm on my way to history not a mistory.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

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 =