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maria [59]
2 years ago
13

A quantum well is a region of semiconductor or metal film that confines particles to a small region, resulting in quantized ener

gies that are useful for the operation of a variety of electronic devices. If an electron in a quantum well is confined to an area that is 510 nm wide, what is the uncertainty in the electron's velocity along the same direction?
Physics
1 answer:
murzikaleks [220]2 years ago
5 0

Answer:

226.2 m/sec

Explanation:

We have given \Delta x=510nm=510\times 106{-9}m

The plank's constant h=6.67\times 10^{-34}

Mass of electron m=9.11\times 10^{-31}kg

Now according to Heisenberg uncertainty principle \Delta v\geq \frac{h}{2\pi m\Delta x}

So \Delta v\geq \frac{6.6\times 10^{-34}}{2\times 3.14\times 9.11\times 10^{-31}\times 510\times 10^{-9}}=226.2m/sec  

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The equivalent resistance of several devices connected in parallel is given by
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A 1400-kg car is moving at a speed of 25m/s. how much kinetic energy does the car have?
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A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 27 ft/s. Its height
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Answer:

V_{3.01}=-93.2m/s

V_{3.005}=-93.1m/s

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Y_{3}=-99m/s

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