The Milky Way galaxy is part of
a. the Virgo cluster.
b. the Large Magellanic Cloud.
c. the Small Magellanic Cloud.
d. the Local Group.
e. a rich cluster.
d
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Energy in Nuclear Reactions: Consider the nuclear reaction: 7Li + 1p ? 4He + 4He. The known atomic masses are7Li: 7.016005 u
He: 4.002603 u1p: 1.007825 uWhat is the Q-value (or reaction energy) of this reaction? (1 u = 931.5 MeV/c2)
A. 13.57 MeV B. 15.37 MeV C. 17.35 MeV D. 17.53 MeV
Interstellar reddening and extinction are due to ________ in the interstellar medium
A) rogue planets B) dust C) hydrogen gas D) helium gas E) ice crystals
Equation of Traveling Waves: Find the speed of an ocean wave whose displacement is given by the equation y = 3.7 cos(2.2x - 5.6t) where x and y are in meters and t is in seconds.
A. 2.5 m/s B. 1.9 m/s C. 3.5 m/s D. 4.5 m/s
_________strengthening is when small hard particles are added to a ductile metal.
Fill in the blank(s) with the appropriate word(s).