the electric force on the proton 
A. The vector points in the +x direction.
B. The vector points in the -x direction.
C. The vector points in the +y direction.
D. The vector points in the -y direction.
E. The vector points in the +z direction.
F. The vector points in the -z direction.
T. The vector is zero.
C. The vector points in the +y direction.
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Venus rotates so rapidly that the dominant form of atmospheric circulation is powered by
a. winds moving from its equator to its poles. b. heated air escaping from its volcanoes moving along the equator. c. winds moving from its poles to its equator. d. heated air escaping from active tectonic plates.
This diagram represents an edge-on view of our Milky Way Galaxy. Of the four labeled points, which one could represent the Sun's position in the galaxy?
A) point 1 B) point 2 C) point 3 D) point 4
What is hypothesized to have caused a sudden inflation of the early universe?
A) the annihilation of matter and antimatter B) the separation of the electromagnetic and weak forces C) the "freezing out" of the strong force from the GUT force D) the energy released in the fusion of protons and neutrons to produce helium E) giant quantum fluctuations
The air in a pipe resonates at 120 Hz and 600 Hz, one of these resonances being the fundamental. If the pipe is open at both ends, how many resonances are between the two given ones, and if the pipe is closed at one end, how many resonances are between the two given ones?
a. open: 3; closed: 1 b. open: 1; closed: 3 c. open: 2; closed: 0 d. open: 0; closed: 2 e. open: 5; closed: 1