Fundamental Skills Flashcards
do all measurements have uncertainty
yes
how many uncertain digits are in a measured value
one
precision value
place value of uncertain digit
can there only be one uncertain digit in combined measured quantities
YES
certain rules to ensure said occurs
rules for adding/subtracting measurements quantities
result rounded to least PRECISE place value
units must be same
Sig digs rules for measured quantity
ONLY applicable to to measured quantities
find 1st non-0 digit from left and everything after significant even 0s
all values on formula sheet has 3 sig digs
Sig digs rules for not measured quantity
number is exact
NO impact on uncertainty
rules for multiplying/dividing measurements quantities
round answer to least SIG DIGS of all measurements used in CALCULATOR
use operation and exponent laws where necessary
scientific notation rules
1st # between 1 and 10 multiplied by power of 10
key stroke for scientific notation on calculator
#, 2ndEE, # eg. 1.21 2ndEE, (-)3
shortcut for km/h to m/s
divide by 3.6
shortcut for m/s to km/h
x 3.6