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 km?
A)
1.2 × 1011 km
B)
1.2 × 1014 km
C)
1.2 × 1017 km
D)
1.2 × 1020 km
E)
1.2 × 1023 km
B
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A 10 kg bomb is moving NORTH with a velocity of 4.0 m/s. It explodes into three fragments: a 5.0 kg fragment moving WEST with a speed of 8.0 m/s, a 4.0 kg fragment moving EAST with a speed of 10 m/s, and a third 1.0 kg fragment. What is the velocity of the third fragment?
A. zero B. 40 m/s NORTH C. 40 m/s SOUTH D. none of these answers are correct
______ is the language that briefly describes each image that loads in a webpage.
A. meta data B. alt text C. pixel text D. SEO tag
Approximately what core temperature is required before hydrogen fusion can begin in a star?
A) 10,000 K B) 10 million K C) 1 billion K D) 10 billion K E) 10 trillion K
Some people may be genetically predisposed to seek out difficult relationships. These difficult relationships may contribute to their experience of depression. This is an example of the _________ model.
Fill in the blank(s) with the appropriate word(s).