In a lab experiment, the density of a liquid is measured as 1.2 g/cm³ with an un

Practice Questions

Q1
In a lab experiment, the density of a liquid is measured as 1.2 g/cm³ with an uncertainty of ±0.05 g/cm³. What is the relative error?
  1. 4.17%
  2. 3.33%
  3. 5.00%
  4. 2.50%

Questions & Step-by-Step Solutions

In a lab experiment, the density of a liquid is measured as 1.2 g/cm³ with an uncertainty of ±0.05 g/cm³. What is the relative error?
  • Step 1: Identify the measured value of the density, which is 1.2 g/cm³.
  • Step 2: Identify the uncertainty in the measurement, which is ±0.05 g/cm³.
  • Step 3: Use the formula for relative error: Relative error = (Uncertainty / Measured value) * 100.
  • Step 4: Substitute the values into the formula: (0.05 / 1.2) * 100.
  • Step 5: Calculate the division: 0.05 divided by 1.2 equals approximately 0.04167.
  • Step 6: Multiply the result by 100 to convert it to a percentage: 0.04167 * 100 equals approximately 4.17%.
  • Step 7: Conclude that the relative error is 4.17%.
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