There appears to be a correlation between the 22-year solar cycle and
A) droughts in North America.
B) asteroid impacts on Earth.
C) change of which political party has the majority in the U.S. Congress.
D) the length of Mercury's day.
E) the length of Saturn's year.
A
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The statement that "heat energy cannot be completely transformed into work" is a statement of which thermodynamic law?
A) fourth B) zeroth C) second D) third E) first
The proper abbreviation for ‘kilohertz' is ‘kHz.'
Indicate whether the statement is true or false
The strongest lines present in spectral class A stars are absorption lines of
A) complex molecules. B) hydrogen. C) oxygen. D) iron. E) helium.
Consider the four quantum numbers of an electron in an atom, n, l, ml, and ms. The energy of an electron in an isolated atom depends on
A) l, ml, and ms only. B) n only. C) n and l only. D) n, l, and ml only. E) all four quantum numbers.