Even if societies on stars in distant galaxies survive at a technological level for only 10 years, that is long enough to establish two-way communication with them
Indicate whether the statement is true or false
F
Physics & Space Science
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Physics & Space Science
This sequence of paintings shows how a large gas cloud can collapse to become a much smaller, spinning disk of gas. What law explains why the center of the cloud becomes so much hotter as the cloud shrinks in size?
A) the law of conservation of energy B) the universal law of gravitation C) the law of conservation of angular momentum D) Newton's second law of motion
Physics & Space Science
The horizontal surface on which the objects slide is frictionless. If F = 12 N, what is the tension in string 1?
A. 35 N B. 30 N C. 40 N D. 45 N E. 25 N
Physics & Space Science
The radiation emitted from a small hole in a furnace is
a. ultraviolet. b. infrared. c. x-ray. d. microwave. e. blackbody.
Physics & Space Science