true
(answered by a sixth grader)
(1x.01) + (2x.001) + (3x.0001) = .0123
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true Jupiter has a larger mass than earthType your answer here...
False on two counts. A rectangular shape is 2-dimensional and so can have no mass. If it is rectangular but has length, width and height then it is a cuboid object. Then, multiplying the length width and height will give the volume, not the mass.
There are basically SEVERAL continuity equations, one for each conserved quantity. The equations themselves are simply statements that matter (in the example of conservation of mass) will not appear out of nothing, or suddenly teleport to a far-away place.
Using a pair of scales and standard mass units.
Its diameter is 2R, whatever the mass.