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Homework C - Uncertainty

1. Ideal value = 2.873, Measured value = 2.73 What is the percent of uncertainty?

2. True value = 4.00E2, Measured value = 412 What is the percent error?

3. What is the percent uncertainty of 22.1?

4. What is the percent uncertainty of 3.7E3?

5. What is percent uncertainty of measuring device with smallest divisions of 0.2?

6. What is the uncertainty of a ruler in cm with 5 divisions per cm?

7. For a caliper to measure .4 inches, how many times does the hand rotate?

8. The dial on a caliper reads 52, and the hand rotates 5 times, what is the size of the object?

9. What is the uncertainty of the measurement above?

10. A digital meter reads 0.23V, what is the uncertainty of the measurement?

11. A digital meter is specked at ± 2mV. The meter reads 232mV.

What is the range of the measurement?

12. A digital meter is specked at ± 2%. The meter reads 4.73V.

What is the range of the measurement?

13. What is the uncertainty of the total length of 2 objects connected together if A = 4 ± 0.1 and B = 8 ± 0.2?

14. What is the uncertainty of the area of an object with dimensions of A = 4 ± 0.1 and B = 8 ± 0.2?