55 problems, each worked in the same four steps. Every formula comes from the formula explorer, every answer is computed rather than stored, and a wrong answer is checked against the usual slips — an unconverted unit, a dropped sign, a slipped prefix — before it is called wrong.
Measuring a classroom
A student measures the length of a classroom as 8.40 m with a tape whose uncertainty is 0.02 m. What is the relative error in the measurement?
1. Identify the quantities
2. Choose the formula
3. Convert to SI
4. Solve
1. Identify the quantities
Tag every number in the statement with the quantity it is, or mark it as not needed. Then choose what is asked for.
