Uncertainty and prefixes Flashcards
How do you determine the uncertainty in the gradient of a line?
The difference between the gradient of the line of best fit and worst fit
M
Mega x10^6
G
Giga x10^9
p
Pico x10^-12
When adding or subtracting 2 values, how do you calculate uncertainty?
Add the absolute uncertainties
When raising to a power, how do you determine the absolute uncertainty?
Multiply the fractional uncertainty by the power
n
Nano x10^-9
What are the 6 SI base units?
Metres
Kilograms
Seconds
Kelvin
Mols
Amperes
c
Centi x10^-2
f
Femto x10^-15
m
Milli x10^-3
Define resolution
The smallest increment that can be measured by a measuring instrument
Define precision
A measure of how little variation there is
Define accuracy
A measure of how close to the true value a value is
When multiplying and dividing how do you measure uncertainty?
Adding the fractional or percentage uncertainties
