SI units — base quantities?
Meter, kilogram, second, kelvin, ampere, candela, mole
SI units — definition?
Standard system for physical quantities.
Modeling types — examples?
Geometric, particle, analysis, structural
Meter — based on?
Distance light travels in vacuum in 1/299,792,458 s.
Dimensional analysis — purpose?
Ensures equations are physically consistent
Second — based on?
Cesium-133 atomic radiation cycles.
Dimensional analysis — purpose?
Verify equation consistency using [L], [M], [T].
Conversion factors — use?
Switch between measurement units.
Order-of-magnitude estimates — purpose?
Provide approximate results within factor of 10.
Significant figures — role?
Express measurement precision; govern calculation accuracy.
Test your knowledge with 9 questions on Fundamentals of Physics Measurement.
1. What is the SI base unit for length, and how is it defined?
2. What is the official definition of the meter according to the International System of Units (SI)?
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