Pluto was discovered in:
A) ancient times.
B) 1789.
C) 1859.
D) 1930.
E) 1992.
D
Physics & Space Science
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The British system is a(n) ______________ , or base-12 system
Fill in the blank(s) with correct word
Physics & Space Science
What is the correct electronic configuration for the ground state sodium atom, which has 11 electrons?
A) 1s12s23p62s2 B) 1s22s22p63s2 C) 1s12s22p6 D) 1s22s13p62s2 E) 1s22s22p63s1
Physics & Space Science
Which of the following elements is the physical basis of life on Earth?
A) Nitrogen B) Oxygen C) Carbon D) Hydrogen
Physics & Space Science
Most of the current star formation in the Milky Way occurs in its spiral arms
Indicate whether the statement is true or false
Physics & Space Science