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A student records the time taken for a reaction as 15.0 s with an uncertainty of
A student records the time taken for a reaction as 15.0 s with an uncertainty of ±0.5 s. What is the total time range?
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Practice Questions
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Q1
A student records the time taken for a reaction as 15.0 s with an uncertainty of ±0.5 s. What is the total time range?
14.5 s to 15.5 s
15.0 s to 16.0 s
14.0 s to 15.0 s
15.0 s to 15.5 s
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Total time range = 15.0 s ± 0.5 s = 14.5 s to 15.5 s.
Questions & Step-by-step Solutions
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Q
Q: A student records the time taken for a reaction as 15.0 s with an uncertainty of ±0.5 s. What is the total time range?
Solution:
Total time range = 15.0 s ± 0.5 s = 14.5 s to 15.5 s.
Steps: 5
Show Steps
Step 1: Identify the recorded time, which is 15.0 seconds.
Step 2: Identify the uncertainty, which is ±0.5 seconds.
Step 3: Calculate the lower limit of the time range by subtracting the uncertainty from the recorded time: 15.0 s - 0.5 s = 14.5 s.
Step 4: Calculate the upper limit of the time range by adding the uncertainty to the recorded time: 15.0 s + 0.5 s = 15.5 s.
Step 5: Combine the lower and upper limits to express the total time range: 14.5 s to 15.5 s.
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