Chapter 2, Problem 13STP

Interpretation Introduction

Interpretation:

The length of the rod using significant digits needs to be determined.

Concept introduction:

The precision of a measurement is denoted by the number of digits reported and the reported digits are termed as significant figures. Significant figures include all known digits plus one estimated digit. All non-zero digits in a measurement are significant.

Answer to Problem 13STP

The answer is $\text{9}\text{.50 mm}$.

Explanation of Solution

The given figure shows two regular rulers and one rod between rulers. The markings on the ruler represent known digits. The reported measurement includes the known digits plus the estimated digit. The end point of drawn rod is $\text{9}\text{.50 mm}$. Hence, the measurement is $\text{9}\text{.50 mm}$.

Conclusion

The measurement of drawn rod is $\text{9}\text{.50 mm}$.