Unit Test — Cumulative exam Answers

When can a theory be modified if a new type of technology allows for new observations that raise new questions?

A spring that has a spring constant of 1400 N/m is stretched to a length of 2.5 m. If the normal length of the spring is 1.0 m, how much elastic potential energy is stored in the spring?

What statements best define percent error? Check all that apply.It is a mathematical way of showing accuracy.The higher the percent error, the more accurate the data set.The higher the percent error, the less accurate the data set.Only the experimental value is needed to calculate percent error.Only the actual, or accepted, value is needed to calculate percent error.A percent error always has a positive value.