How fast are Earth's plates moving due to tectonic motion?

A. a few centimeters per year
B. a few centimeters per century
C. a meters per year
D. a few kilometers per year


Answer: A

Physics & Space Science

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An ideal monatomic gas undergoes a reversible expansion to 1.5 times its original volume. In which of these processes does the gas have the largest loss of internal energy?

A) at constant pressure B) if the pressure increases in proportion to the volume C) if the pressure decreases in proportion to the volume D) at constant temperature E) adiabatically

Physics & Space Science

The mass of an electron and its antiparticle, a positron, is 0.511 MeV/c2 . In order to produce an electron-positron pair, a gamma ray must have an energy larger than 1.022 MeV because __________

Fill in the blank(s) with correct word

Physics & Space Science

The centroid of the parallelogram shown in the figure below is at coordinates (x, y):

(A) 5b/6, h/2
(B) 5b/12, h/3
(C) 5b/8, h/2
(D) 5b/6, h/3

Physics & Space Science

Mica is not found in

A) slate. B) schist. C) gneiss. D) quartzite.

Physics & Space Science