Socrates died from ingesting the alkaloid named
a. nicotine.
b. caffeine.
c. quinine.
d. coniine.
d
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A car starts from rest and travels a distance of 100 m in 15 seconds with a constant acceleration. The average velocity of the car for the 15 seconds interval is
A. 24.0 m/s. B. 21.0 m/s. C. 16.7 m/s. D. 13.3 m/s. E. 6.67 m/s.
Polonium-215 alpha decays with a half life of 1.8 ms
(a) How much is left after 1. second? (b) What is the daughter nucleus?
What is the name for the following polyatomic ion?
PO4-3 A) phosphate B) phosphorus oxide C) phosphinate D) trioxo phosphoride E) potassium
Stars on the main sequence with the greatest mass
a. are spectral type M stars. b. are spectral type O stars. c. are located at the bottom of the main sequence in the HR diagram. d. have masses very similar to the sun. e. both b and c