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PtichkaEL [24]
3 years ago
7

If Jonathan went skateboarding from 4:00 PM to 4:30 PM and traveled 450 meters, what was his average speed?

Chemistry
1 answer:
mrs_skeptik [129]3 years ago
8 0
20 m Increase by five
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The smallest observable object for an electron microscope is 6.6nm.

<h3>Calculation of smallest observable object for an electron microscope :</h3>

Given,

Speed of electron (u) = 5.5 x 10⁴ m/s

De Broglie's formula,

wavelength, λ =h/mu

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h = Planck's constant = 6.626 x 10^{-34} Js

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= 0.132 x 10^{-7} m

= 13.2 x 10^{-9} m

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Therefore, 13.2 x 10^{-9} m/2

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