The masses of all the planets combined is about 1% of that of the Sun
Indicate whether the statement is true or false
TRUE
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Planets found in the habitable zone of other stars
A) are all rocky planets, like the terrestrial planets in our solar system. B) are all jovian planets. C) include some Earths and super-Earths. D) include hot Jupiters. E) have been demonstrated to be barren of all life.
Which of the following would be an accurate description of the Great Red Spot?
A. The red spot has formed at the interface between two adjacent bands. B. The red spot is a solid feature on the gaseous surface of Jupiter. C. The red spot rotates like a whirlpool. D. All of the above. E. Both A and C.
Roughly how many stars are in the Milky Way Galaxy?
A) 1 billion B) 100 billion C) 10 billion D) 100 million E) 100 trillion
A 0.20-km wide river has a uniform flow speed of 3.0 m/s toward the east. A boat with a speed of 8.0 m/s relative to the water leaves the south bank and heads in such a way that it crosses to a point directly north of its departure point. How long does it take the boat to cross the river?
a. 29 s b. 23 s c. 25 s d. 27 s e. 17 s