The current definition of a kilogram is the mass of a platinum-iridium cylinder kept in
a. the United States.
b. France.
c. England.
d. Japan.
b
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The oxygen in Earth's atmosphere
a. was manufactured inside stars. b. was added to the atmosphere by plant life. c. has grown more abundant since the origin of Earth. d. was manufactured inside stars, was added to the atmosphere by plant life, and has grown more abundant since the origin of Earth. e. None of the other choices are correct.
What object is shown in this photo?
A) Mars B) Venus C) Mercury D) Ganymede
In the gap between quasars and normal spirals lie
A) Fisher-Tully galaxies. B) Irr II galaxies. C) lobe radio galaxies. D) Seyfert galaxies. E) S0 galaxies.
If a quantity you calculated has units of A ? s, what is that quantity?
A) potential B) resistivity C) resistance D) capacitance E) charge