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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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.
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