Part A Determine the number of significant figures in the measurement 6.07 \ m m

Question

Part A

Determine the number of significant figures in the measurement 6.07 m m ?

Express your answer numerically as an integer.

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Part B

Determine the number of significant figures in the measurement 0.0030 m s ?

Express your answer numerically as an integer.

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Part C

Round the value 44.981 m g to three significant figures.

Express your answer numerically using three significant figures

Number Significant figures Explanation 23.56 4 All nonzero digits are significant. 23.560 5 Trailing zeros are significant when a decimal point is shown. 1000 1 Trailing zeros are not considered significant when no decimal point is shown. 1000. 4 Showing the decimal point indicates that the preceding zeros are significant. 500.01 5 Zeros between nonzero digits are significant. 0.0078 2 Leading zeros are not significant.

Explanation / Answer

Part A
Determine the number of significant figures in the measurement 6.07 m m ? Express your answer numerically as an integer.
Answer: 3
Total two nonzero digits and one zero between two nonzero digits, hence significant.
Part B
Determine the number of significant figures in the measurement 0.0030 m s ? Express your answer numerically as an integer.
Answer: 2
Total one nonzero digit and one trailing zero after decimal point, hence two significant figures. Three leading zeros are insignificant.

Part C
Round the value 44.981 m g to three significant figures. Express your answer numerically using three significant figures
Answer: 45.0 as the rightmost digit removed is 8 which is greater than 5.

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