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11 Cards in this Set
- Front
- Back
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Which zeros automatically count as significant?
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Between two non-zero digits
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How many significant digits in 36.00 m?
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4 - the final zeros count because they are after the decimal AND after a non-zero digit.
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Why bother with significant digits?
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Significant digits tell you how well the values used in a calculation were measured.
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The more decimal places a measurement is the more ... it is.
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Precise
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The formula for percent error is...
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O-A/A * 100
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The A in the percent error formula stands for the
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accepted value
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The O in the percent error formula stands for the ...
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observed or measured value
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In physics, we hope for less than ... % error in the lab.
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10%
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13.0050 has how many sig digs?
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6 - the zeros between 3 and 5 count because they are between non-zeros. The last zero counts ecause it is after a decimal AND ALSO after a non-zero.
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99.01 + 1 = ?
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100.
99.01 goes to the hundreths place but 1 only goes to the ones place. Since you are adding, your answer must go to the ones place. Putting a decimal after the second zero makes both zeros count. |
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Write 1400 as scientific notation.
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1.4 x 10^3
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