Task id9744

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Task id9744

A proton flying horizontally with a speed v = 4.6 • 106 m/s collides with a stationary free helium atom. After the impact, the proton bounces back with a speed v1 = v/2, and the atom goes into an excited state. Calculate the wavelength of light that a helium atom emits when returning to its original state.

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Detailed solution. Format png

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