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Question 21 [1 point) A planet whose distance from the Sun is 3 A.U. would have an orbital period of how many Earth-years? 'r i
Question 21 [1 point) A planet whose distance from the Sun is 3 A.U. would have an orbital period of how many Earth-years? 'r \\i 3 x / r3 / fr I \\ [ifH} 9 \\_ _/ Question 22 (1 point) The angular size of an object depends on which two: ,.. u.\\_ :3 The objects brightness and its mass ,.. .2 j the object's distance from us and its brightness x""- .- '. the object's actual size and its mass . | M. x""- .- ,3' the object's actual size and its distance from us '\\ Question 23 (1 point) As the Sun evolves into a red giant in the distant future, then according to Wien's Law: .:j' it will disappear from the universe of visible light. .;j' j} most of its energy must become shorter in wavelength if) its light will be slowed down by its increasing mass if") its peak on the Planck curve will move into the infrared Question 24 (1 point) Geosynchronous satellites orbit at about four Earth radii, where the Earth's gravitational pull is: O 2 3 C; 1/16 g times [51:] 1/2 g
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