25. Newton\'s version of Kepler\'s third law states: pé According A) the orbital

Question

25. Newton's version of Kepler's third law states: pé According A) the orbital period and the density of the two objects B) the average distance between C) the radius of the two planets in meters and the average distance between them to this, what observational information does one need in order to calculate the combined mass of a planet and its moon? the two objects and the orbital period D) It is impossible to determine the mass of any astronomical object. 26. Newton's version of Solve this equation to find the combined mass of a planet and its satellite, given the orbital perlod and average separation 4m2 Kepler's thrd law states: p, B) M1+ M2 412 27. When is a comet's orbital angular momentum at its maximum? Aj when the comet is close to the Sun B) when the comet is far away from the Sun C) Its angular momentum does not change Answer: C 28. When is a comet's orbital speed at its maximum? A) when it is closest to the Sun B) when it is farthest from the Sun C) its orbital speed does not change 29. Why do we sometimes observe asteroids in the gaps in the asteroid belt? AJA gap is located at an average orbital distance, and asteroid orbits often have large eccentricities B) Jupiter's gravitational tugs keep them there. C) They ave held in place Dj They are kept in place by shepherding asterolds Actualy, we never see asteroids in the gaps. by resonances with other asteroids. 30. Why aren't small asterolds spherical in shape? A) The force of gravity in small asteroids is less than the resistance of the rock to deform. B) Smal asteroids have odd shapes because they were all chipped off larger objects. C) Large asteroids were once molten and therefore became spherical, but small asteroids were never molten. D) Large asteroids became spherical because many small collisions chipped off pieces until only a sphere was left; this did not occur with small asterolds 31. What is a meteonite? A) a streak of light caused by a star moving across the sky 8) a streak of ight caused by a small particle from space burning up in Earth's atmosphere C) a fragment of material from the solar system that has fallen to Earth's surface DJ a small moon that orbits one of the giant planets E) a comet that burns up in Earth's atmosphere control opt

Explanation / Answer

25) Option B) is correct.

26) Option D) is correct.

27) Option C) is correct.

28) Option A) is correct.

29) Option A) is correct.

30) Option A) is correct.

31) Option C) is correct.

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