, Module Z Foundations
physics
:
of
. I base
S .
quantities & their units :
homogeneity of SI. .
units : When units on
right =
left
·
Mass (kg)
·
Length (m)
Peta-
·
time (s)
·
Current (A)
·
Temperature (k)
·
Substance (mol)
Random errors : due to external factors .
-
can't be corrected but can be
mitigated by conducting repeats
Pico 10-12 P
Femto 10-15 f
Systematic errors :
vary by a consistent amount each
time
e
.
g faulty devices
-
.
Accuracy : how close measurement is to true value
Precision : how close repeat measurements a re
Absolute
uncertainty : I
(range of measurement/2)
Percent uncertainty : absolute uncertainty 100
x
actual value
In graphs :
normal
Intact Friction
Grad of best fit line -
Grad of worst fit line
goo
x100
Grad of best fit line
-
Wso
Resolving vectors : a) -
S
horizontal :
Fx = F cos O
WsinG
F sin O
Vertical :
Fy =
Finding g
in a labi ** to switch & timer
analysis
-
trapdoor &
electromagnet from Sut +
Lat h =
Egt
button pressed
-Electromagnet releases ball from rest when plotting h/t? gradient is
Eg
·
, ,
S
electronic timer started at the same time
-
When ball opens trapdoor ,
electronic timer stopped
ut
? * to switch & timer
use : S = +
tat
-
physics
:
of
. I base
S .
quantities & their units :
homogeneity of SI. .
units : When units on
right =
left
·
Mass (kg)
·
Length (m)
Peta-
·
time (s)
·
Current (A)
·
Temperature (k)
·
Substance (mol)
Random errors : due to external factors .
-
can't be corrected but can be
mitigated by conducting repeats
Pico 10-12 P
Femto 10-15 f
Systematic errors :
vary by a consistent amount each
time
e
.
g faulty devices
-
.
Accuracy : how close measurement is to true value
Precision : how close repeat measurements a re
Absolute
uncertainty : I
(range of measurement/2)
Percent uncertainty : absolute uncertainty 100
x
actual value
In graphs :
normal
Intact Friction
Grad of best fit line -
Grad of worst fit line
goo
x100
Grad of best fit line
-
Wso
Resolving vectors : a) -
S
horizontal :
Fx = F cos O
WsinG
F sin O
Vertical :
Fy =
Finding g
in a labi ** to switch & timer
analysis
-
trapdoor &
electromagnet from Sut +
Lat h =
Egt
button pressed
-Electromagnet releases ball from rest when plotting h/t? gradient is
Eg
·
, ,
S
electronic timer started at the same time
-
When ball opens trapdoor ,
electronic timer stopped
ut
? * to switch & timer
use : S = +
tat
-
