If a hydrogen atom in the ground state absorbs a photon of energy 12.09 eV, to which energy state will it make a transition?

A) n = 2
B) n = 3
C) n = 4
D) n = 5


B

Physics & Space Science

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Approximately how long does it take stars in our region of the Milky Way to complete an orbit around the center of the Milky Way Galaxy?

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In 1974, a radio message was sent out from the Arecibo observatory in Puerto Rico. How far has it gotten, approximately?

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A velocity selector for ions uses perpendicular electric and magnetic fields. If the electric field used were 800 V/m, what magnetic field would allow the selection of a velocity of 4000 m/s?

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Physics & Space Science

Magnetic Poles: Which one of the following statements is correct?

A. Earth's geographic north pole is the north pole of Earth's magnetic field. B. Earth's geographic south pole is the south pole of Earth's magnetic field. C. The north pole of a magnet points towards Earth's geographic north pole. D. The north pole of a magnet points towards Earth's geographic south pole. E. None of these statements is correct.

Physics & Space Science