Medium A blocks more of a certain wavelength of radiation than medium B. Medium A has a higher
A) albedo.
B) transparency.
C) clarity.
D) opacity.
E) seeing.
D
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Most hot Jupiters are thought to have formed in the orbits they have been discovered
Indicate whether the statement is true or false
The actual matter density of the universe, accounting for all of the luminous matter and all of the dark matter known to exist in galaxies and clusters, is what fraction of the critical density?
A) 25 percent B) 10 percent C) 200 percent D) 1 percent E) 100 percent
The largest asteroid, and probably the only one to be a spherical "world," is
A) Ceres. B) Ida. C) Vesta. D) Gaspra. E) Eros.
A skater is using very low-friction rollerblades. A friend throws a Frisbee at her, on the straight line along which she is coasting. Describe the following event as an elastic, an inelastic, or a perfectly inelastic collision between the skater and the Frisbee. She catches the Frisbee and immediately throws it back with the same speed (relative to the ground) to her friend
1.elastic 2.inelastic 3.perfectly inelastic