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lyudmila [28]
3 years ago
7

A bike and rider of total mass 75.0 kg moving at a velocity of 30 m/s to the right

Physics
1 answer:
kakasveta [241]3 years ago
5 0

Answer:

(75.0 \times 30) + (60.0 \times 6.0) = (75.0 \times V) + (60.0 \times 0) \\ 2250 + 360 = 75V \\ 75V = 2610 \\ V = 34.8 \: m {s}^{ - 1}

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An electron is confined to a one dimensional region, bounded by an infinite potential. If the energy of the electron in its firs
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Answer:

The energy in its ground state is 10 meV.

Explanation:

It is given that,

The energy of the electron in its first excited state is 40 meV.

Energy of the electron in any state is given by :

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For ground state, n = 1

E_1=\dfrac{\pi^2h^2}{8mL^2}.............(1)

For first excited state, n = 2

40=\dfrac{2^2\pi^2h^2}{8mL^2}.............(2)

Dividing equation (1) and (2), we get :

\dfrac{E_1}{40}=\dfrac{1}{4}

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Explanation:

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