Photoelectric threshold for potassium, 6.2 x 10 -7 m.

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Photoelectric threshold for potassium, 6.2 x 10 -7 m. What is the maximum speed can get taken out of the potassium electrons when irradiated with violet light with a wavelength of 4.2 x 10 -7 m? The mass of an electron to take equal 9.1 * 10 ^ -31 kg, the speed of light 3 * 10 ^ 8 m / s.

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Task 50144. Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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