The most important function of a landfill is to store and get rid of solid waste which it provides an area where waste is disposed of and can be managed properly in order to reduce health and environmental risk<span />
The answer is D, Carbon and hydrogen
By the de Broglie wavelength equation, the speed of proton is <u>0.47 × </u>
<u> m/s</u>.
λ = h / mv
λ = wavelength, given = 8.29 fm
h = plank's constant, given = 6.626 × 
m = mass, given = 1.672 ×
kg
v = velocity
Now, v = h / mλ
Put the values in formula, v = h / mλ
v = 0.47 ×
m/s
Therefore, the speed of proton is<u> 0.47 × </u>
<u> m/s</u>.
Learn more about de Broglie wavelength here:- brainly.com/question/15330461
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