Approximately how many days does it take for a white dwarf supernova to decline to 10% of its peak brightness?
A) 3 days
B) 30 days
C) 170 days
D) 300 days
B) 30 days
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Most stars generate their energy by the thermonuclear fusion of ____________________ to form ____________________
Fill in the blank(s) with correct word
The pressure differential across a wing cross section due to the difference in air flow is explained by
A) Newton's third law. B) Bernoulli's equation. C) Poiseuille's law. D) Archimedes Principle. E) Kepler's law.
The Stock system of nomenclature uses
a. Roman numerals. b. Greek prefixes. c. Arabic numerals. d. Egyptian hieroglyphics.
A measurement of an electron's speed is 2.0 × 106 m/s and has an uncertainty of 10%. What is the minimum uncertainty in its position? ( h = 1.055 × 10-34 J • s, mel = 9.11 × 10-31 kg)
A) 0.29 nm B) 0.15 nm C) 0.44 nm D) 0.60 nm E) 0.80 nm