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

Physics & Space Science

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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.

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What object is shown in this photo?

A) Mars B) Venus C) Mercury D) Ganymede

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If a quantity you calculated has units of A ? s, what is that quantity?

A) potential B) resistivity C) resistance D) capacitance E) charge

Physics & Space Science

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.

Physics & Space Science