When is friction a potential problem for applying conservation of momentum to a system?
A. When friction is an external interaction
B. When friction is an internal interaction
C. In both cases
D. In neither case
A. When friction is an external interaction
Physics & Space Science
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The Universe is _______________ because it looks the same in any direction you observe it
Fill in the blank(s) with correct word
Physics & Space Science
A skater spins with a roatation of 3 cycles per second. If she draws in her arms so that rotational inertia is reduced to 80% of her former amount, what will be her spin rate?
Physics & Space Science
Liquid metallic hydrogen is found in the interior(s) of
a. Uranus. b. Neptune. c. Uranus and Neptune. d. neither Uranus nor Neptune.
Physics & Space Science
RNA catalysts in cells are referred to as
A) enzymes B) ribozymes C) ribosomes D) chemzymes
Physics & Space Science