The place the Sun stops its northward motion along the ecliptic is the:

A) equator.
B) prime meridian.
C) summer solstice.
D) vernal equinox.
E) node of the ecliptic.


C

Physics & Space Science

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The most likely way we could terraform Mars would involve

A) adding greenhouse gases to the atmosphere B) moving the planet closer to the Sun C) restarting Martian volcanoes D) firing projectiles into the polar caps

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A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (rAl = 2.82 × 10^-8 W × m; aAl = 3.9 × 10^-3 / °C; rnichrome = 1.50 × 10^-6 W × m; anichrome = 0.40 × 10^-3 / °C.) The ratio of the temperature change of the nichrome wire to the temperature change of the aluminum wire is

a. 0.019. b. 0.10. c. 0.18. d. 9.8. e. 53.

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Claudius Ptolemy created a mathematical model of the Aristotelian Universe in which a planet followed a small circle called the _____ that slid around a larger circle called the deferent

A) heterocycle B) epicycle C) pericycle D) hemicycle

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The galactic halo or corona is believed to contain mostly

a. O and B stars. b. G, K, and M stars. c. open clusters d. globular clusters e. dark matter.

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