Introduction to Physics Flashcards
what is the acronym for S.I Base units
(Mettal) Mass Electric current Temperature Time Amount of substance Length
random errors definition
errors in experimental measurements caused by unpredictables and unknwon chanegs in the experiment
is human error an example of a random error
not really, human errors are often one-off anomaolies.
examples of how random errors can occur
small changes in controlled variables
ssyntematic error deinition
error that happens die to inaccuracy of apparatus or its use bu the person conducting the experiement
what is a zero error
a type of systematic error which occurs when an instrument is not properly calibrated to start from 0.
what does the data look like when random errors are produced
vales are higher/lower than mean value
what does the data look like when systematic errors are produced
data is consistently higher/ lower from the true accurate value
accuracy definition
the degree to which a value obtained by an experiment is close to ther actual true value
prescise definition
the degree to which repeated values in the same experiement are similar (i.e low range)
prescise definition
the degree to which repeated values in the same experiement are similar (i.e low range)
how do you increase prescsion
increase the resolution of the apparatus measuing the result
which of these will be affected by a sytematic erorr: acucracy, prescision?
accuracy
how many s.f should uncertainties be written to
1s.f - there’s uncertainty in uncertainites
momentum equation
mass * velocity
