The rotation curve for our Galaxy shows stars beyond the Sun moving more slowly than expected
Indicate whether the statement is true or false
FALSE
Physics & Space Science
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A property common to active galaxies is that their energy is primarily ________
Fill in the blank(s) with correct word
Physics & Space Science
The change in electric potential energy, Ub - Ua, is the work done on a charge by the electric force as it moves from point a to point b
Indicate whether the statement is true or false
Physics & Space Science
Two nuclei which share the same mass number A always are (Hint: Eliminate any wrong answers.)
a. stable. b. unstable. c. isotopes. d. isobars. e. radioactive.
Physics & Space Science
The most noteworthy highlight of the Mesozoic era was the
A) break-up of Pangaea. B) emergence of humans. C) Pleistocene extinction. D) ice age.
Physics & Space Science