Uranus is approximately 3 x 10^9 km away from the Sun. What is the distance in astronomical units?
a. 1 AU
b. 2 AU
c. 10 AU
d. 15 AU
e. 20 AU
e
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The wavelength of a wave is
A) how strong the wave is. B) the distance between a peak of the wave and the next trough. C) the distance between two adjacent peaks of the wave. D) the distance between where the wave is emitted and where it is absorbed. E) equal to the speed of the wave times the wave's frequency.
When we speak of the large-scale structure of the universe, we mean
A) the overall arrangement of galaxies, clusters of galaxies, and superclusters in the universe. B) the structure of any large galaxy. C) the structure of any individual cluster of galaxies. D) the overall shape of the observable universe.
For a closed surface through which the net flux is zero, each of the following four statements could be true. Which of the statements must be true? (There may be more than one.)
(a) There are no charges inside the surface. (b) The net charge inside the surface is zero. (c) The electric field is zero everywhere on the surface. (d) The number of electric field lines entering the surface equals the number leaving the surface.
1.(a) only 2.(b) only 3.(b) and (d) 4.(a) and (d)A stone submerged in water displaces a volume of water
1) greater than volume of stone. 2) less than volume of stone. 3) equal to volume of stone. If the stone were of low-enough density to be able to float, it would displace a volume of water 4) greater than its volume. 5) less than its volume. 6) equal to its volume.