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If percentage error in measurement of quantities A,B,C,D are 1%,2%,3%,4% respectively the percentage error in measurement of z=A^2B^1/2/C^1/3D^1/4?
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If percentage error in measurement of quantities A,B,C,D are 1%,2%,3%,...
- **Calculating Percentage Error in z**
Calculating the percentage error in z requires understanding how the errors in A, B, C, and D propagate through the expression z = A^2 * B^(1/2) / C^(1/3) * D^(1/4).
- **Error Propagation Formula**
The formula for calculating the percentage error in z given the errors in A, B, C, and D is:
\[ \frac{\Delta z}{z} = \sqrt{(\frac{\Delta A}{A})^2 + (\frac{\Delta B}{B})^2 + (\frac{\Delta C}{C})^2 + (\frac{\Delta D}{D})^2 } \]
- **Substitute the Given Errors**
Substitute the given percentage errors into the formula:
\[ \frac{\Delta z}{z} = \sqrt{(0.01)^2 + (0.02)^2 + (0.03)^2 + (0.04)^2 } \]
- **Calculate the Percentage Error**
Calculating the percentage error:
\[ \frac{\Delta z}{z} = \sqrt{0.0001 + 0.0004 + 0.0009 + 0.0016 } \]
\[ \frac{\Delta z}{z} = \sqrt{0.003 } \]
\[ \frac{\Delta z}{z} = 0.055 \]
- **Conclusion**
The percentage error in the measurement of z is approximately 5.5%. This means that the measurement of z is sensitive to errors in A, B, C, and D, and the overall uncertainty in z is 5.5%.
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If percentage error in measurement of quantities A,B,C,D are 1%,2%,3%,4% respectively the percentage error in measurement of z=A^2B^1/2/C^1/3D^1/4?
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