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Q1: According to Kirchhoff's first law why do
Q20: While gravity is always attractive, electromagnetic forces
Q29: Redshift surveys give us<br>A) an idea of
Q38: An electron has a electric charge.
Q54: Gamma- ray bursters seem scattered randomly over
Q55: The Milky Way Galaxy is forming about
Q126: The assumption that from any place in
Q131: Why aren't there young stars in the
Q137: The size of a quasar can be
Q168: Which type of galaxy has a stellar