Sara and Sam are each working on a science project in which they need to research the individual masses of the nine planets (including the dwarf planet Pluto as the ninth planet). Sara completes her data for the planets' masses in kilograms while Sam's data is in milligrams.
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SI base unit is kg for Mass
Hence Sara's data for Jupiter as 1.989 · 10²⁷ kg is more appropriate than
Sam's 1.989 · 10³³ mg Data
1.989 · 10²⁷ kg
1kg = 1000 g
1g = 1000 mg
=> 1kg = 1000 * 1000 mg
=> 1 kg = 10⁶ mg
hence 1.989 · 10²⁷ kg = 1.989 · 10²⁷ * 10⁶ mg
= 1.989 · 10³³ mg
= Sam's Data
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