estimating to the nearest 10^?
order of magnitude
a value that was actually measured
sig fig
all non-zeros are _____ [significant/never significant]
significant
leading zeros are _____ [significant/never significant]
never significant
middle zeros are ______ [significant/never significant]
significant
trailing zeros are significant when a _____ is present
decimal
for sig fig multiplication/division - round to the same SF as the ______ _________ ___________
least precise measurement
for sig fig addition/subtraction - round to the _____ of ______ __________
level least precision
a tool used for converting units and solving problems
dimensional analysis
all measured values have 3 parts
propagation of uncertainty
the three parts of a measured value
______ _____
________
_____
measured value uncertainty units
+/- 0.05
absolute uncertainty
(absolute uncertainty)/(measured value)
percent of relative uncertainty
propagation of uncertainty multiply/divide
add percent uncertainty
propagation of uncertainty add/subtract
add absolute uncertainties
when measuring on a non-digital device, always read to the nearest ______ _____ and _____ once
marked value guess
when measuring on a digital device, always assume the ____ digit is a ____
last guess
a quantity with both magnitude and direction
vector
what are the two ways to signify direction (vectors)? ___ ____, ________ ___________
unit circle cardinal directions
adding vectors: add ____ to ___
tail tip
breaking vectors: make a _______, use ___ ___ ___ to find angles/length
triangle sohcahtoa
adding vectors NOT on a ________ ____:
_____ ___
___ ____ __________
put them _____ ___________
coordinate plane break them add each component back together
5 vector quantities:
d_______
a________
v________
f_______
f_________
displacement acceleration velocity force field