Four research teams measured the rotation period of a newly detected neutron star, and what each team wrote in its team notebook is shown in the table below. Suppose a later and more reliable measurement gives 1.020 s for the period of the same star. Decide which of the earlier measurements was the most accurate, and which was the most precise. team A B C D what was written in the notebook "1.07s +0.05s" "between 1.005s and 1.015s" "1.120s +2.0%" "0.97s" most accurate measurement O O O most precise measurement O O X S
Four research teams measured the rotation period of a newly detected neutron star, and what each team wrote in its team notebook is shown in the table below. Suppose a later and more reliable measurement gives 1.020 s for the period of the same star. Decide which of the earlier measurements was the most accurate, and which was the most precise. team A B C D what was written in the notebook "1.07s +0.05s" "between 1.005s and 1.015s" "1.120s +2.0%" "0.97s" most accurate measurement O O O most precise measurement O O X S
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Title: Measuring Neutron Star Rotation Periods: An Analysis
**Introduction:**
Four research teams conducted measurements of the rotation period of a newly detected neutron star. The recorded data by each team is displayed in the table below. Later, a more reliable measurement determined the period to be 1.020 seconds. The task is to evaluate which team's measurement was the most accurate, and which was the most precise.
**Table Analysis:**
| Team | What was Written in the Notebook | Most Accurate Measurement | Most Precise Measurement |
|------|----------------------------------|---------------------------|--------------------------|
| A | "1.07s ± 0.05s" | | |
| B | "between 1.005s and 1.015s" | | |
| C | "1.120s ± 2.0%" | | |
| D | "0.97s" | | |
- **Team A:** Recorded a mean value of 1.07 seconds with a precision of ± 0.05 seconds.
- **Team B:** Provided a range between 1.005 seconds and 1.015 seconds.
- **Team C:** Documented a mean value of 1.120 seconds with a precision error of 2.0%.
- **Team D:** Noted a single value of 0.97 seconds.
**Conclusion:**
To deduce the most accurate and the most precise measurements, compare each team's data against the reliable reference measurement of 1.020 seconds.
**Definitions:**
- **Accuracy** refers to how close a measurement is to the true or accepted value.
- **Precision** refers to the consistency of repeated measurements.
Based on the information provided:
- **Team B** is the most accurate, as their range includes the reference measurement of 1.020 seconds.
- **Team A** is the most precise with a small uncertainty of ± 0.05 seconds.
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