The elements in the periodic table that have completely filled shells or subshells are referred to as
A) alkali metals. B) transition elements.
C) noble gases. D) halogens.
C
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The Earth's orbit has a mean radius of 1.5 × 108 km. Over a six-month period, the apparent position of a particular star varies by 0.00014° due to parallax. How distant is the star, in ly? (1 ly = 9.46 × 1015 m)
A) 0.13 ly B) 1.3 ly C) 13 ly D) 130 ly E) 1300 ly
Phase Angles: A 10-? resistor is in series with a 100-?F capacitor at 120 Hz. What is the phase angle?
A. -82° B. -53° C. -37° D. -4.7° E. +37°
The mean free path for a nitrogen molecule in a tank of dry nitrogen at 273 K is 0.15 ?m. If the diameter of a nitrogen molecule is 0.29 nm, what is the pressure in the tank?
A. 95.1 kPa B. 48 kPa C. 211 kPa D. 299 kPa E. 67.2 kPa
Where on Earth would you be if Polaris were directly overhead?
A) North Pole B) Arctic Circle C) Tropic of Cancer D) Equator E) It lies overhead everywhere on Earth.