Spectra from neutral atoms compared with spectra from ionized atoms of the same element
A) are the same.
B) are slightly redshifted.
C) are slightly blueshifted.
D) have different sets of spectral lines.
E) have the same sets of spectral lines but different widths for those lines.
D
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a. Red light b. Blue light c. Yellow light d. Cyan light
Define emission lines
What will be an ideal response?
Sunspots:
A) are always found close to the Sun's poles. B) come in pairs, representing the north and south magnetic fields. C) were most numerous during the Maunder Minimum. D) travel over the surface of the Sun from pole to pole. E) are relatively constant in number every year.
A figure skater rotating at 5.00 rad/s with arms extended has a moment of inertia of 2.25 kg ? m2
If he pulls in his arms so his moment of inertia decreases to 1.80 kg ? m2, what will be his new angular speed? A) 2.25 rad/s B) 4.60 rad/s C) 6.25 rad/s D) 0.81 rad/s