Chapter 2, Problem 114A

Interpretation Introduction

Interpretation:

The measurement which is done by the most precise measuring device needs to be identified.

$\text{8}\text{.1956}\text{m}\text{,}\text{8}\text{.20}\text{m}\text{or}\text{8}\text{.196}\text{m}$

Concept introduction:

The measurement which is close to the accepted value is called accurate measurement. There is little variation shown by set of precise measurements. The possible degree of precision is determined by the measuring device.

Answer to Problem 114A

$\text{8}\text{.1956}\text{m}$ is a most precise measurement.

Explanation of Solution

There are most measurable points in a most precise measuring device which implies that the most precise number will contain the most decimal points. Therefore, the number containing the most decimal points is $\text{8}\text{.1956}\text{m}$, a most precise measurement as it contains 4 decimal points and the other measure contains only 2 or 3 decimal points.

Conclusion

Thus,

$\text{8}\text{.1956}\text{m}$ is a most precise measurement.