What do we mean by a "super Earth"?
A) a planet made of metal and rock that is larger in mass than Earth
B) a planet that is more massive than Earth and also has surface oceans
C) a planet with an Earth-like orbit that has more abundant life than Earth
D) a planet similar in size to Earth but orbiting close to its star
A) a planet made of metal and rock that is larger in mass than Earth
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Which of the following is not visible during totality of a total solar eclipse?
a. the corona of the sun. b. the chromosphere of the sun. c. prominences. d. the photosphere of the sun. e. all of the above
A perfectly opaque object that absorbs all radiation and reemits the absorbed energy as thermal radiation is
A) a hot, dense cloud of gas. B) a cold, dense cloud of gas. C) an infrared radiation emitter. D) a thermal emitter. E) transparent.
A 90-kg halfback running north with a speed of 10 m/s is tackled by a 120-kg opponent running south at 5.0 m/s. The collision is perfectly inelastic. Compute the velocity of the two players just after the tackle
a. 1.4 m/s south c. 2.8 m/s north b. 2.8 m/s south d. 1.4 m/s north
The planet ______________ contains more than half the mass of the solar system not in the Sun
Fill in the blank(s) with correct word