The day on Earth for which people in the Northern hemisphere experience the longest amount of daylight compared to night.
summer solstice
winter solstice
vernal equinox
winter solstice
summer solstice
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What is the Q-value for the reaction where the products are 0.006 u less than the reactants? (1 u = 931.5 MeV/c2)
a. 11 MeV b. 22 MeV c. 3.9 MeV d. 5.6 MeV e. 8.4 MeV
If the density of the Universe is ________ than the critical density, then the Universe will ________.
A. larger; expand forever B. larger; eventually collapse in a "Big Crunch" C. less; eventually collapse in a "Big Crunch" D. less; not change in size
Cassini's probe Huygens returned images of what may have been a shoreline on Saturn
Indicate whether the statement is true or false
Centaurus A is the closest lobe radio galaxy, and may be a collision between a spiral and an elliptical galaxy
Indicate whether the statement is true or false