Which person realized the laws of gravity applied to objects both on Earth and in space?
A) Newton
B) Copernicus
C) Kepler
D) Galileo
A) Newton
Physics & Space Science
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A star's apparent magnitude is a measure of how bright it appears to us if it is at its actual distance
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
What temperature has the Big Bang cooled to by now?
A) 1.4 K B) 5,800 K C) about 3,000 K D) about 300 K E) just over 2.7 K
Physics & Space Science
When we say work is done against a force, we mean the force does
a. none of the work. b. positive work. c. negative work. d. zero work.
Physics & Space Science
Alexander Litvinenko was assasinated with
A. plutonium B. tritium C. radium D. polonium
Physics & Space Science