Answer to Question #243070 in Physics for Prince

Question

Data on the compressive strength of a concrete block after testing are as follows: 2.50 MPa, 2.55 MPa, 2.52 MPa, 2.51 MPa, and 2.56 MPa. Find the relative uncertainty.

Answer 1

In one of the previous problems we have established that the relative uncertainty is 0.02 MPa, and the average is 2.53 MPa, so, the relative uncertainty is

$$\epsilon=\frac\delta\mu·100\%=1\%.$$