Anaes SAQs · Measurement & monitoring physics
SI units and dimensional analysis
Primary — seven base units (m, kg, s, A, K, mol, cd); derived units (newton, pascal, joule, watt, hertz); dimensions (M, L, T, etc.) and dimensional consistency; prefixes (kilo to pico, milli vs micro thousand-fold dosing error); pressure conversion 1 atm = 101.325 kPa = 760 mmHg = 1033 cmH2O; temperature Kelvin/Celsius; concentration units; random vs systematic error, accuracy vs precision, calibration fixes bias.
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List the seven SI base units. Explain dimensional analysis, and convert 1 atmosphere into kPa, mmHg and cmH2O. Distinguish accuracy from precision and describe how each kind of measurement error is reduced. (Question stem restated — the worked answers below carry the primary-source citations.)
References4ShowHide
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