A star's ________ parallax is found by using the spectral lines to estimate the spectral class and luminosity of distant stars
Fill in the blank(s) with correct word
spectroscopic
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A 2.3 cm tall statue is 15. cm in front of a convex mirror. The mirror radius of curvature is 18. cm. (a) Is the image real or virtual? (b) How far is the image from the mirror? (c) Is the image upright or inverted? (d) How high is the image?
What will be an ideal response?
How do asteroids appear in long exposure images?
A) as complex curving and looping lines B) as points of light, like the stars C) as resolved disks, like the planets D) as straight lines across a background of stars
What produces the 21-cm line that we use to map out the Milky Way Galaxy?
A) atomic hydrogen B) ionized hydrogen C) molecular hydrogen D) carbon monoxide E) helium
When a neutron decays to a proton, a(n) __________ particle is emitted
Fill in the blank(s) with correct word