Hellopeople233
03.08.2021 •
Physics
If a student can read her physics book only when she holds it no farther than 15 cm away, what focal length of lens should be prescribed so she can read when she holds the book 30 cm away?
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Ответ:
explanation:
Trailing zeros after a decimal point count if preceded by a non-zero value. Example: 0.01 one significant figure, 0.010 two significant figures, 0.0100 three significant figures.