The H line has a wavelength of 434.0 nm when observed in the laboratory. If the H line appears in a stars spectrum at 434.5 nm, what is the radial velocity of the star?
a. 346 km/s away from the observer
b. 346 km/s toward the observer
c. 1.3 108 m/s away from the observer
d. 1.3 108 m/s toward the observer
e. The radial velocity of the star cannot be determined from this information.
Question 2
Choose the correct word(s) that make the statement true. A (lunar, solar) eclipse occurs when the Moon is (new, quarter, gibbous, full) and the ordering of aligned celestial objects is always Sun, Moon, Earth.
What will be an ideal response?
Laboratory, Institute of Biochemistry, University of Cologne.
Blue whale skeleton, outside the Long Marine Laboratory at the University of California, Santa Cruz
Photograph of the retina of the eye. The optic disk appears yellow and the retinal arteries radiate
The Sun as it appears from the surface of the Earth at Sunset.
If you want to show differences between items at the same time, a bar graph is more effective than a
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