- #1
Jerry Z
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Question:
A distance R is measured to be 3.400 ± 0.007m. What is the absolute uncertainty in R^−2?
Attempted solution:
Relative uncertainty: 2* (0.007/3.4) = 4.11E-3;
R^-2 = 3.4^-2 = 0.0865 m^-2;
Absolute uncertainty = R^-2 * relative = 0.0865 * 4.11E-3 = 3E-4 m^-2;
Any help would be greatly appreciated!
EDIT: instead of 3E-4, the correct rounding should be 4E-4.
A distance R is measured to be 3.400 ± 0.007m. What is the absolute uncertainty in R^−2?
Attempted solution:
Relative uncertainty: 2* (0.007/3.4) = 4.11E-3;
R^-2 = 3.4^-2 = 0.0865 m^-2;
Absolute uncertainty = R^-2 * relative = 0.0865 * 4.11E-3 = 3E-4 m^-2;
Any help would be greatly appreciated!
EDIT: instead of 3E-4, the correct rounding should be 4E-4.
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