Physics
Which of the following experiments analyzed the Fraunhofer lines of the solar spectrum?

Geiger and Marsdens experiment on scattering of alpha particles
Lamb-Rutherford experiment
Bunsen and Kirchhoff's experiment
Barkla's experiment on scattering of X-rays

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Physics
The mass defect is the result of what action occurring?

Energy being converted into moles of atoms when neutrons break apart protons
Mass being converted to energy when protons and neutrons break apart in a nucleus
Mass being converted to energy when protons and neutrons bind together in a nucleus
Protons and electrons being attracted to each other

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