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
C
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GPS stands for
a. the metric system of measurement b. grams per second c. Global Positioning System d. a space shuttle e. none of the above
Thermal Expansion: The coefficient of linear expansion of aluminum is 24.0 × 10-6 K-1, and the density of aluminum at 0°C is 2.70 × 103 kg/m3. What is the density of aluminum at 300°C?
A. 3.93 × 103 kg/m3 B. 2.73 × 103 kg/m3 C. 2.70 × 103 kg/m3 D. 2.67 × 103 kg/m3 E. 2.64 × 103 kg/m3
As with the lunar mare and Earth's ocean basins, the chief rock in the low plains of Venus is ________
Fill in the blank(s) with correct word
Earthquake P waves are
a. neither longitudinal nor transverse. b. transverse. c. longitudinal. d. sometimes longitudinal and sometimes transverse.