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zimovet [89]
3 years ago
6

An electron is accelerated from rest through a potential difference. After acceleration the electron has a de Broglie wavelength

of 880 nm. What is the potential difference though which this electron was accelerated
Physics
1 answer:
Vladimir [108]3 years ago
4 0

Answer:

3x10⁴v

Explanation:

Using

Wavelength= h/ √(2m.Ke)

880nm = 6.6E-34/√ 2.9.1E-31 x me

Ke= 6.6E-34/880nm x 18.2E -31.

5.6E-27/18.2E-31

= 3 x 10⁴ Volts

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Alternating Current In Europe, the voltage of the alternating current coming through an electrical outlet can be modeled by the
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Answer:

\frac{50}{\pi }Hz

Explanation:

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V(t) = V sin (ωt + Ф)            -----------------(i)

Where;

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Ф = phase difference between voltage and current.

<u><em>Now,</em></u>

From the question,

V(t) = 230 sin (100t)              ---------------(ii)

<em><u>By comparing equations (i) and (ii) the following holds;</u></em>

V = 230

ω = 100

Ф = 0

<em><u>But;</u></em>

ω = 2 π f = 100

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