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Asolar system has the four planets shown below. all of them have the same mass. four circles labeled planet a, planet b, planet c, and planet d are shown inside a rectangle. planet a is close to the top edge of the rectangle near the middle of the top edge. planet b is slightly below planet a and towards the right of planet a. planet c is close to the left edge of the rectangle near its center. planet d is near the right corner of the lower edge of the rectangle. planets a and b are closest to each other and planets d and c are farthest from each other.
between which two planets is the gravitational attraction the strongest? planet a and planet b planet a and planet d planet b and planet c planet c and planet d
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