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Significant Figures & Scientific Notation. Physics. Significant Figures. Indicate accuracy of measurements Several rules for # of significant figures.. Non-zero digits are always significant. Any zeros between two significant digits are significant.

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## Significant Figures & Scientific Notation

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**Significant Figures**Indicate accuracy of measurements Several rules for # of significant figures.. • Non-zero digits are always significant. • Any zeros between two significant digits are significant. • A final zero or trailing zeros in the decimal portion ONLY are significant.**Accuracy vs. Precision**Accurate? Precise? Both? Neither?**Significant Figures**Indicate accuracy of measurements Several rules for # of significant figures.. • Non-zero digits are always significant. • Any zeros between two significant digits are significant. • A final zero or trailing zeros in the decimal portion ONLY are significant.**Significant Figures**Indicate accuracy of measurements Several rules for # of significant figures.. • Non-zero digits are always significant. • Any zeros between two significant digits are significant. • A final zero or trailing zeros in the decimal portion ONLY are significant. 0138.44 138.44**Significant Figures**Indicate accuracy of measurements Several rules for # of significant figures.. • Non-zero digits are always significant. • Any zeros between two significant digits are significant. • A final zero or trailing zeros in the decimal portion ONLY are significant. 80210 5009**Significant Figures**Indicate accuracy of measurements Several rules for # of significant figures.. • Non-zero digits are always significant. • Any zeros between two significant digits are significant. • A final zero or trailing zeros in the decimal portion ONLY are significant. 9.01000 290.0**Scientific Notation**• Common technique used to express very large or very small numbers. • Large #: Mean distance from Earth to Sun • 93,000,000 miles • Small #: Mean distance across a helium atom • 0.00000000000008699 miles • Maintain accuracy! (Keep same # of significant figures) • Only 1 significant figure to the left of the decimal point.**Scientific Notation**• Common technique used to express very large or very small numbers. • Large #: Mean distance from Earth to Sun • 93,000,000 miles • Small #: Mean distance across a helium atom • 0.00000000000008699 miles • Maintain accuracy! (Keep same # of significant figures) • Only 1 significant figure to the left of the decimal point.**Scientific Notation**• Common technique used to express very large or very small numbers. • Large #: Mean distance from Earth to Sun • 93,000,000 miles • Small #: Mean distance across a helium atom • 0.00000000000008699 miles • Maintain accuracy! (Keep same # of significant figures) • Only 1 significant figure to the left of the decimal point.**Scientific Notation**• Common technique used to express very large or very small numbers. • Large #: Mean distance from Earth to Sun • 93,000,000 miles • Small #: Mean distance across a helium atom • 0.00000000000008699 miles • Maintain accuracy! (Keep same # of significant figures) • Only 1 significant figure to the left of the decimal point.

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