7.
A student measures the mass of a paper clip. The student’s data table is shown below. The accepted value for the paper clip’s mass is 1.14 g.
Trial # Mass
1 2.45 g
2 2.40 g
3 2.42 g
Which of the following best describes the student’s measurements?
(1 point)
• The student’s measurements were accurate, but not precise.
• The student’s measurements were precise, but not accurate.***
• The student’s measurements were neither accurate nor precise.
• The student’s measurements were both accurate and precise.
8.
Which component of the technological system is achieved when an automobile airbag inflates?
(1 point)
• input
• feedback
• process
• output***
Help.. PLZ!
8 is correct
Both are correct
7. To determine the accuracy and precision of the student's measurements, we need to compare them to the accepted value. Accuracy refers to how close the measurements are to the accepted value, while precision refers to how close the measurements are to each other.
In this case, the student's measurements of 2.45 g, 2.40 g, and 2.42 g are all significantly different from the accepted value of 1.14 g. This indicates that the measurements are not accurate, as they do not reflect the true value of the paper clip's mass.
However, the measurements are relatively close to each other, within a range of 0.05 g. This suggests that the measurements are precise, as they are consistent and repeatable.
Therefore, the best description of the student's measurements is that they were precise, but not accurate.
8. The component of the technological system that is achieved when an automobile airbag inflates is the output. Output refers to the result or outcome of a technological process. In this case, the inflation of the airbag is the desired outcome or output of the system. It is the final stage of the process where the airbag is deployed to provide safety protection during a collision. Therefore, the correct answer is "output."