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3. Challenge Problem: Gwen and Jeffrey are writing up a report on
the electrical resistance experiments. For their report, they want to
know how many atoms of copper were in the 25.00-cm long copper
wire, which had a cross-section of 3.25 E 2cm². What number of
atoms should they report? (Hint: the density of copper is 8.92
g/cm³)
Sagot :
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