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phy131studiof15:lectures:chapter1 [2015/08/24 08:51] mdawber [Visual comparison of different types of eror] |
phy131studiof15:lectures:chapter1 [2015/08/24 09:19] mdawber [Scientific Notation] |
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Examples: | Examples: | ||

- | $0.000056$ m = $5.6 \times 10^{-5}$ m or $5.6 \times 10^{-2}$ mm. | + | $0.000056$m = $5.6 \times 10^{-5}$m or $5.6 \times 10^{-2}$mm. |

- | $795,000$ g = $7.95 \times 10^{5}$ g or $7.95 \times 10^{2}$ kg or $795$ kg. | + | $795,000$g = $7.95 \times 10^{5}$g or $7.95 \times 10^{2}$kg or $795$kg. |

In general it is not correct to give more significant figures for a number than the precision to which you know it. However you should not round off numbers too early in a calculation, as this can affect the accuracy of the final answer. | In general it is not correct to give more significant figures for a number than the precision to which you know it. However you should not round off numbers too early in a calculation, as this can affect the accuracy of the final answer. |