If we wanted to describe and better understand the structure of the rings of saturn, we might develop a
scale. system. machine. model.
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Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

What is the largest meteoroid that has collided with this planet