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Page 1

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absorption spectrum A
spectr
um of
dark l
i
n es
across
the
patt
ern
o f
spect
ral
col
ours
pr
oduced when l
i
g ht
passes
thr
ou gh
a gas
and t
he gas absor
bs
cer
tai
n f
requenci
es dependi
ng
on t…

Page 2

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components Par
ts
of
elect
ri
c ci
rcui
ts,
i
ncl
udi
ng
bul
bs,
LDRs,
t
her
mist
ors,
et
c.

components of a The
resul
ts
fr
om
resol
vi
ng
a si
ngl
e vect
or
int
o hor
izont
al
and
vector ver
ti
cal…

Page 3

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distance (d) How f
ar
one posi
ti
on i
s f
rom
anot
her
,
measur
ed
in
met
res
(m)
,
e.g.
12
m a
scal
ar
quan t
it
y.

drag The
resi
sti
ve
for
ce
that
act
s on
a body
w hen
it
moves…

Page 4

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electron diffraction The
process
of di
ff
ract
ing an
elect
ron
thr
ough
a gap
(usual
ly

bet
w een
atoms i
n a c
rystal
st
ruct
ure,
f
or
example
graphi
te)
.
A n
example
of
w ave­part
icl
e dual
it
y.

electron flow The…

Page 5

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fuse An el
ectr
ical
component
designed
to
heat
up,
me lt
and
break
the
ci
rcui
t
(hence st
op
the
current
) when
a speci
fi
ed amount
of
elect
ri
c
cur
rent
passes t
hrough
it
.
U sed
as a
saf
ety
de vi
ce.…

Page 6

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joule Uni
t
of
e ner
gy (
J),
e.g.
1200
J.
1 J
is
the
w or
k done
w hen
a f
orce
of
1
N
mo ves
it
s poi
nt
of
appli
cati
on 1
m in
the
dir
ecti
on of
t
he
f
orce.…

Page 7

Preview of page 7
newton Uni
t
of
for
ce
(N),
e.g.
4000
N .
1
N
is
the
for
ce
w hi
ch
gives
a mass
­2
of
1
kg
an accel
erat
ion
of
1 m s.

node A
p oi
nt
that
al
ways has
zero
amp l
it
ude
along…

Page 8

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potential difference, The
elect
ri
cal
energy
per
unit
char
g e
w hen
elect
ri
cal
ener
gy
is

p.d. conver
ted
int
o some ot
her
for
m o f
energy.

potential divider A
type
of
cir
cui
t
contai
ning
two
comp onent
s desi
gned
to…

Page 9

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resultant velocity The
over
all
vel
oci
ty
w hen
combi
ng
two
or
mor
e vel
oci
ti
es.

scalar A
ph ysi
cal
pr
opert
y wit
h magnit
ude
(si
ze)
but
not
dir
ecti
on
for

example,
speed,
di
stance,
pr
essur
e,
potent
ial
di…

Page 10

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terminal velocity The
veloci
ty
at
w hi
ch
a n
obj
ect
's
drag equal
s
it
s accel
erat
ing
f
orce.
Ther
e f
ore
there
is
no
resul
tant
f
orce
and zer
o accel
erat
ion.

thermistor A
component
t
hat
ch anges
it
s…

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