The resistivity of aluminium at room temperature is 2.62 ×10 −8Ω − m . Calculate the drift velocity of the conduction electrons in a filed of 50V/m, their mobility, acceleration, relaxation time and mean free path based on classical free electron theory. Density of aluminium is 2700 kg / m3

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

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 =