Problem 3) a 70 ft long, 0.5 in diameter hose with a roughness of 0.0009 ft is fastened to a water faucet where the pressure is p1, determine p1 if there is no nozzle attached and the average velocity in the hose is 6 ft/s neglect minor losses and elevation changes. repeat the problem if there is a 0.25 in diameter nozzle attached to the end of the hose.

b.transmitters send radio waves, and receivers capture radio waves.

root word, prefixes, and suffixes

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 =