If a sound wave has a speed of 300 m/s and a wavelength of 2 m, what is the frequency of the sound wave? a 0.0067 Hz. b 150 Hz
c 302Hz
d 600Hz ​

b. latent learning (the word "latent" itself means something that exists but isn't obvious, only under certain conditions! )

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

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 =