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Page 1

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Electric Fields

Char
g i
ng pl
asti
c ma t
e r
ial
s

Mo st
plast
ic materi
als
can be charged
qu i
te
easil
y by r
ubbing wi
th a
dry cl
oth.

Wh e n
an uncha r
ged
Perspex rod
is
rubbed wit…

Page 2

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Ti
ny amo unt
s of
charge
on t
h e
pins
of
an
elect
roni
c chi
p can
be enough
to dest
roy
cir
cuit
s i
nsi
d e
the
chip i
f
the
pins
ar
e t
o uched
in
the pr
esence of
a charged…

Page 3

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A
li
g ht
ning
conductor
is
a metal
r
od at
t
he t
op of
a t
all
bui
ldi
ng.
It
i
s c
o nnect
ed t
o t
he gr
o und
by a
thi
ck
metal

conductor
.
Wh en
a charged
cloud
is…

Page 4

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Charge i
s cr
eated when t
he rubber
bel
t
rubs
against
a
pad and i
s car
ri
ed by
the
belt
up
to
the
me t
al
dome
of
the
generat
or.

As
cha r
ge gather
s on t
he dome ,
t
he pot
enti…

Page 5

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2 2 2
For
ces
at
ri
ght
angl
es
E =
E1 +
E2



The
elect
ri
c pot
e nt
ial
V
= Q/4pi
E0r
at
a di
stance
r
fr
om Q
A
nega t
i
ve E mea ns
a f
iel
d t
hat
act…

Page 6

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I
f
ther
e i
s no l
oss
of
speed
on
imp act
t
hen
v =
u and
so
the
imp act
f
orce
F = 2mu /
t
I
f
the
ini
ti
al
dir
ect
ion
o f
t
he
bal
l
is
not
perpendi
cul…

Page 7

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Cent
ri
pet
al
for
ce


Cent
ri
pet
al
for
ce
is
the
resul
tant
f
orce
on
an
obj
ect
t
hat
moves
in
a c
irc
u l
ar
pat
h
F
= ma
a =
v^2/
r
Cent
ri
pet
al
for
ce
F = mv^2/…

Page 8

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Bi
g wheel
(
at
maxi
mum
hei
ght
)



















Simple Harmonic motion

Pr
inci
ples
o f
si
mp l
e
harmo ni
c moti
o n

S imp l
e harmonic
mo ti
on:
this
i
s an osci
ll
ati
on
in
w hi
ch t
he…

Page 9

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The var
iat
ion of
vel
o ci
ty
w i
th
ti
me
is
given
b y
the
gr
ad i
ent.
V i
s great
est when t
h e
gradient
i
s
gr
ea t
est
an d
thi
s i
s whe n
the di
splacement…

Page 10

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f =
1/2 x
squ ar
e root
(k/
m)
a nd
T he
tension
in
the spr
ing var
ies
from mg + kA t
o mg
­kA where
A
is
the
amp li
tude
Ma ximum tension
is
w hen x
= A
(spri
ng i
s st…

Comments

Jessica

Report

These notes were fab! Any chance you've done some for unit 5??

Luke

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Great notes, are there any for unit 5?

Luke

Report

Great notes, are there any for unit 5?

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