2. fundamentals of physics Flashcards
How do you measure absolute uncertainty?
Mean value +/- 0.5 x range
How do you measure percentage uncertainty?
Absolute uncertainty / measurement x 100
What are SI units?
Fundamental base units of physical quantities
SI unit of mass?
Kilogram
SI unit for amount of substance?
Mol
SI unit for current?
Amperes
SI unit for temperature?
Kelvin
SI unit for length?
Meters
What quantity is measured in seconds?
Time
What multiplier is associated with the prefix kilo?
10^3
What multiplier is associated with the prefix femto?
10^-15
What is accuracy?
Measure of how close a measured value is to the true, accepted value
What is validity?
Measures what it is supposed to be measuring
What is a random error?
Error that occurs due to unexpected changes
What is an anomaly?
Data point that does not fit the trend of the data
What is a systematic error?
Faults in equipment or experimental methods
