MCQOPTIONS
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				| 1. | 
                                    Kepler's 3rd law states that... | 
                            
| A. | the periods of revolution of the planets are proportional to the cube of their mean distances from sun | 
| B. | the periods of revolution of the planets are inversely proportional to the cube of their mean distances from sun | 
| C. | the squares of the periods of revolution of the planets are proportional to the cube of their mean distance from sun | 
| D. | the squares of the periods of revolution of the planets are inversely proportional to the cube of their mean distance from sun | 
| Answer» D. the squares of the periods of revolution of the planets are inversely proportional to the cube of their mean distance from sun | |