This bar graph is based on statistical study of results from the Kepler mission. Which of the following conclusions is supported by the graph?
A) At least about 15% of stars have a planet similar in size to Earth.
B) Most stars with an Earth-sized planet do not have any larger jovian planets orbiting far from their stars.
C) Most stars have five planets.
D) A star orbited by a super-Earth is likely also to be orbited by a mini-Neptune.
A) At least about 15% of stars have a planet similar in size to Earth.
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Bulk Modulus: Which one of the following would be expected to have the smallest bulk modulus?
A. liquid mercury B. liquid water C. helium vapor D. solid iron E. solid uranium
Young's Modulus: A bridge piling has a cross-sectional area of 1.250 m2 and supports a load of 1875 N. What is the stress on the column?
A. 1875 N B. 1875 N/m2 C. 1500 N/m2 D. 2344 N/m2
Approximately what core temperature is required before hydrogen fusion can begin in a star?
A) 10 million K B) 10,000 K C) 10 trillion K D) 10 billion K E) 1 billion K
To find the distance of nearby stars, we use their parallaxes obtained over ________-month intervals
A) one B) three C) six D) twelve E) twenty-four