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What is the error in a measurement of 20.0 cm if the true value is 19.5 cm? (202

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Question: What is the error in a measurement of 20.0 cm if the true value is 19.5 cm? (2023)

Options:

  1. 0.5 cm
  2. 0.5%
  3. 2.5 cm
  4. 2.5%

Correct Answer: 0.5 cm

Exam Year: 2023

Solution: 

The error is the absolute difference between the measured value and the true value, which is |20.0 - 19.5| = 0.5 cm.

What is the error in a measurement of 20.0 cm if the true value is 19.5 cm? (202

Practice Questions

Q1
What is the error in a measurement of 20.0 cm if the true value is 19.5 cm? (2023)
  1. 0.5 cm
  2. 0.5%
  3. 2.5 cm
  4. 2.5%

Questions & Step-by-Step Solutions

What is the error in a measurement of 20.0 cm if the true value is 19.5 cm? (2023)
  • Step 1: Identify the measured value, which is 20.0 cm.
  • Step 2: Identify the true value, which is 19.5 cm.
  • Step 3: Calculate the difference between the measured value and the true value by subtracting the true value from the measured value: 20.0 cm - 19.5 cm.
  • Step 4: Find the absolute value of the difference to get the error: |20.0 - 19.5|.
  • Step 5: The result of the calculation is 0.5 cm, which is the error in the measurement.
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