[vnmath.com] de thi thu ky thi quoc gia chuyen dhsp mon vat li lan 1 2015
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7/24/2019 [VNMATH.com] de Thi Thu Ky Thi Quoc Gia Chuyen DHSP Mon Vat Li Lan 1 2015
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TRdNc DAI rIQc s PHAM
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mIING THPT CI{ITYN
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t
=to6s(2'
+
L)
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7/24/2019 [VNMATH.com] de Thi Thu Ky Thi Quoc Gia Chuyen DHSP Mon Vat Li Lan 1 2015
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du
do?
mach sn
pha
hd
cune
d
donc dcn
qu
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mh
d
ml
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bls
b nniu.
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s6
cng $1 cd itoan hch cne l6n
lhi
cne sui deu dien
oi6 .lor
mqlh cs .n.
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khns.
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s
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ni
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ri
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s
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ds
ca
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4,
hi
ns sia
lai
d
q,
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dat
cl4
dai
v
c6
gi
Li
Uc
=
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d6
din p
hi dqne
hal
d doqn
sqch
cha R v
L
l
t. 1u.
2
B.
-hu.
c.2l3u.
Cau
r
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mt di, p xoay
chiu
c
si
la
hiu
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v
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di vo hai du
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R.L.C mic n6i
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due
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l
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cun
cn rtun l
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o
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r
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). R
k
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24.
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d
sng c i i]y
di
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iryn.
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d
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phu thc
vo
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.n
ona chJ Mns j
sid
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7/24/2019 [VNMATH.com] de Thi Thu Ky Thi Quoc Gia Chuyen DHSP Mon Vat Li Lan 1 2015
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C 25:
nft mt chr lne c6 hi nc
phi
srig kr hqp
S, v sr
cch
niau
19 c_ Eai
nsun ny d dne
{o
lhus
thins dns 06
phlms
r.iil
ln rvl l ur
-
5os(4it)
(M)
v I?
= 5@s(4od
+
'Xm).
Tc d ryn
sns
lren n$
chr lng l
s0
cn/s.
S did d dDc
vdi
bin
d
crc
ri
rn
doe s
srs, l
E.
tO did
Cu 26r Mt sdns m truyr
hong p vdi i,5c
d 5820
n/s.
Nu d lch
p
ca sne
n d d lai
din
e
rlau
rt . nnau
ln
rrn cie mr
phums
uy
sns
I
1
tht
dn e6
ca
s6lg
bs
C,5820I12.
c 2?: Dt ilin
p
xoay chiu c6
gi
rri hi& due krne
di, rn e5 50 riz vo
hai
du
doen
Dach
mc
ni dp
em
din
td tlu
&
cn
cD t
qj
d tv cn L
y
r
din
dir dg
C
thay
di
duqc. Di cbi.I
d'n dug c dn
**,.i
$o
o"l"
S"rr,i
cle s
ieu ih c doe
mach
du
c6
gi
tri bns
n u.
ci
tri cLa L
big
o.La.
n.
1n.
c,1t
.
3n
2r
cu 28: Diqn p
si
hai
d ol
.lo4n
qh c6
biu
rhc
u = 22ocosrootrr
(v).
ci r.i ticu .\e
t
2a.
B
220a5 V. c.Il0v.
o. rrq
v.
Ctu 29r Dat diqn p
=
Uocosoi
vo
hai
du
do?n
4.h
phi
c ilt
die
C rhi otde
rt
de .tier
tc
thi
chey lrorg
Dac
l i, PhA
biu
r sa
dy
l tthg?
.
d
cne
ildi di&n,
dien
dp
u chm
ph
rr'? ao vdi dns
din
i
.
E. Dns
(nr
i
in ngu@
lha
vdi
din
p
.
C.
cng
th,i di\
dng din
i cnm
lha
a2 so voi .iin
,p
.
D. Dng
dir
i
lujr
crlLns
pha
\
qi dir
a
.
cE 30: Mr
doen
m9c[
din xoay chi
en
din rd R mc #i ri v
t difu c_
Nu
due
}nrs z{
be
R
ili ddns
tl
dng
iCn
chay
qu
dien
t6
.
, nl.h
pa
n/2
e
vi dien
gp
d hsi d dosn mach.
B.
nlenn
ph
tr/4
e
rdi
dir
dp
d hai du
do
macr
(.
chqn
pha
ur so\drdrndpohardurudrc .
O, < h6n
pha
/4
s
vo
dien
p
hai
driu
doqn mcl.
Ctu 3r: Di trin p
xoay chju c6
gid
i
iC
drrns U
-
iso
V
vo
bi 6.u doa
ncl c6 R n6i p
vl
cn
cm u
L. Din hi dqls
sia
hai
u cuOn cn l
I20 V. E s one s
c4 doan
B.0,8.
c.0,7.
D.0,9.
L
'e "
.ng
trm khi uin
ao ;
cns nn v
dn s
cars ud.
B.
nsl& cng cao kli
mic
cde
d s
cns
li .
C. oi
d
c
ph
thc vo
hhn dang v lich thudc
np cng
huig.
D. c n nic
pr
rhuc vo drc
d
thi
do dry co n.
Cnu
33r
d
ht
n c6 hai ngn s6ng
ei6g
.au
A
B, cch nla
rt klong
AB
=
t2
cn
dlag
.lo dng
r tng
s6c
vit
nt ndc 1o
.
sng
c6 ludc sns 1,6
m. M a
N l
lai &m
tlc nu
thuc
ni
ndc,
cch d
hi neun
v
cch
rdrg
iiin
i
cL
AB
n1khons
8
cn.
S
din dtu
dng
cirnB
pha
ri
hai ngn
d n doa MN bne
It.6,
D.3.
r,-ct
c"6- Ma d
tIl
ct
34i T60 .i
tuyn
sng co
plu
u&
v yu
t no s ity?
-
7/24/2019 [VNMATH.com] de Thi Thu Ky Thi Quoc Gia Chuyen DHSP Mon Vat Li Lan 1 2015
5/6
ci 3s: cei
.l
t lbng c,h
gita
hi
din tn
phms
rruy
stis.
N
d=(2,+l)+
G
=
0,1,2...)
vdi
T1chukt
src,
v lc
d ry sne
iii
hi din.16 d& dOne
D.
vdi
d0
lch
pha
knng
xd
rlj'l,.
cu 36: Tr mot so-i dy cing ngeg
vdi
hai
rtu
d ir'
oj sdns dhs vii d
s
.lao rlng 5 rL
Bin
d dao
.ins c
itih
hine
sng
l
2 cn. Knons oich
gn
n
git
hai
dir
cu
hi
bo s6.g
ca nbEu cd ons bin dO
I
cn l
2
cm.
c
d tuy sdng
r.n
.ty
l
C.0,8rvs.
Cu 37r Mt ngun
n
rlqc coi n nt neun
di
pht
s6trs n ong ni i
tng
coi nlu
klng
hp
u
a
pdjr
te
m thL
Cns
sir
oa
ngun
n la
0.225
w.
Cumc
d
m.hLin
l0
-
1o'ri
(wn'1).
Mc
cns d
n
qi
mt din cdch ne n I o m l
a- ?9,12dt. B. 81,45 .lB.
c.82,5t
dB.
cu 38:
MOt sne
ners
@
lhms
tinn
,
=
5cos(8,t
qo4B)
l
tryn
tln
mOr
dy
di,
ho.s .i6
v x d]m tinh bng ;, cn 1
(n
bs
s. Tc d
i.uy
sng ftn day
bc
D,81,2t dB,
B.2,5
m/s. D 1,5 n/s,
B.7s,11\.
D. r 5oJ2 V.
c 39:
cho nqch
tlin xoy chio AB
sn
&
L, C mic nitip. c6 cn th
c6
d
ts
cn
rhsy .ii
d.c-
Dit
yo
hai
du doan D?ch
aB
Dt dien p xoay
chi
n dlnn
=
loc.6@s0oort)
(v).
Diu chinl d
tr
cn
d din
4'
hiqu
dus
hi ttu cn
cn
.ler
gi
t{
.vc
dli
l
Ur*
i]ll
dien
hiu
d.u
g
bi dn
tu
dien
2oo v.
Gi
i ur.- l
a.l50v, 8.250v,
c.300v. D.100v.
clu 40. Dt din p rcay
.t
r
=
U,6cos,t
1o
ni du don nach RLc
mc ni
& tong
tl
q
din
c
c
din
dg
thay
di
ryc.
Kni
c
=
c0
thi diyan
fu
hieu
ds
sia
bi bn
t
dqt
gi6
hi
cw
lLi \r
din
&
hieu
dMe
erd
lai
du
di.." b
R l
75v. Kli
d \ oi dim d o 6p hic
lboi
gi.lr
hai du dod mch l
75Jv
tL diin r ttc Lh
ci"
hdi
d
doan
n4h Rt
lr')G
v
9i6
hieu duns
giits
hai d .toar nsh
l
cu 41:
cho.loqn
m?ch mc n6i tip
g
dir
rro dn
R = 60(), t di, C
v c.
.ty
qt
d
tu
ca thay .ii dwc lbeo tiing th tv tr, Dl
vo
hai d doan nach din
xoay
chi
,
=
I80J2
csloor
(v).
Ki
ry di
dO
U
cn
c
dn
dy l,t
si
rn
n
cm
lns
cu
cn dy
l
30O
i
ce
s
ri
lhr dii
c
do
nach
c6 si
lri ldr
bht, dng
thdi
ar
nle
pha
voi
,.
cng sr r'tu ny be
4.412 W.
8.192
W
C.5?6
W.
cnr
42: cho doqn mscn
RLc
nr tp R - 8oo;
cun ddy
.
D.216W.
d
r'
cmr
=3
H
v
c rli rr
r
=
6.4=l gr.
D-
.
=
llq
2oo. Tu
dien
C c din
ds
bin
di
ilwc.
Din p hai d do mh c6
bi
thc
-
l2oJ2
@(l on)0.. D dne din cbay
tuns ilm
mach
.han
pha
so vi{in
p
ei
hai du
om mach
ml
s.
r/4,
tnl
did
ds C
pMi
siii
iri
o.
"
=
? 9pn
C 43: Dldin p xoay chi cb
gi
iri hi drrng U
=
l80
V vo hai ii nl
do
nh
sn
bin
la
R ric nr ripv cuoncm ttr
cd
eim L. Khi dir chinlr bin
ko
R roi
s'A'iRr-roo
TtE
5.ur 6
M
il Jll
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7/24/2019 [VNMATH.com] de Thi Thu Ky Thi Quoc Gia Chuyen DHSP Mon Vat Li Lan 1 2015
6/6
oc
Rz
-
l20O li
cng
sui tieu thrr ca
do
nac
t ong lai me hqp l n nna. Gi lri ca
/-216W. 8.1801V.
C.232W- D.240 W
.
ci 41:
Doqn
neci
xoay
chi
RLc
ni dp c dit
p
liu
dr .g
d hi
.tu
doa nqch
king
di.
Ein tuqne ofue hdne di
xy
tli
rhy di
r s5 f d
din
p
hju
dl) s
rrn
r
dat c@ . ai-
B.
thay
rti
din
ds
c
rt
c.g
s
d
th
ol
do h?ch
dat
c(e
d?i.
c. tly di dien R
d
cns
s {u ih ca doen
nch
di .vc del.
D.
ay
d6i d
nJ
co
L d
din
p
hiu
d\g
trn cn
cn
d?r crc dai.
cu 4s, Mt mh dao dle li
tu@s
sn
cun
cn
t'
c
dO ts cin L }ljte di
v
tu
dien
c
rtiCn
de c L\ay di dusc. Di
chiin
din
dug c
t+
difu dn
gi
ti C, tlri s6 dao
done
dne
c.
t.i
.scr.
B.?
.
c- .fic,.
cq
46: Mt
hech d
dng
l{
ts
gn
on
tu
thu
c6
dO
4r
c.n
L tu
tliCn
.6
din
dug
c
dds o dao tlns tli t
t'r
do. th dim
t
dne
diq.
qu
cn
dy @ @qe d ble 0 ih,
rhdi
A,
lns
lds din t:uns
c,i 1u
.lifu c6
ei
ia bis
nt na
gi
lri
clrc d?i
c
n.
B.
.liCn
tich t:tu
mO1 bl t c6
ei
1ri
lle nt di
ei
d
c'c
dfl
ql
.
c. rlitr lich rn nr be tu
6
si
rd bbs kllrs.
D.
dns
ilin
q@
cr
dy
o cms d bts o.
cr
,17:
Trcns mai dao
dns
Lc 6 dm
ills
din ti tv do
yi
chu *i nlc
I
T thi
,a- thong
ihi
gi
gia
hai l
lid
dp nng lqng din 1irng dal cw dai
l
T/2.
B.
nne
lmg
rtin
tnig
v
nng
lqrs lir
irng
bin thin
tu
hon
@
thi
cid
vi
chu
ki
be
T.
C.
Lhr ,rg lgng
dr
lrung
o
gi
tri crrc
.lei thi nng l@g din t .g ctng cd
ei,
hi
cqc d4i.
D
khole
i
eie
eia
hai l lin p
Drne
l-dg
diqn
ang d.g n.s l g
tt:utng I
T2.
C 48: Cho nOt mgch d .lng LC ll nrdg,
cun dy
c6 .i 1 cn ,
=
4l ,q .
Tar
lhi din t
=
O,
dng
.li tong h c6
gi
C
nl
na
si
Li cvc ti6i ca
ft
v @ d
l
d
s
rns.
Tni
dims
nh r[,ljcr-or
d
donc
di hrs m-b co
si
ri b;s los l;
ja,.
o'"a-e
c'i lach l
f,.
D dh s d done.ine ca
m?ch
fslthi
phi
iiiu chinh
rlin
dg c t .in
D.fr
C.25
pL
D.25.
c
49.
Mrdin t one $ne
gid
ot
sng
difu
tir
tuyn
qu
i lsi .i6
A.
vedo
ch tle
r
v
v. ro
(
ng lt lti ms lLn
'
rs
hme \
d
\
tu
vn
6..
B. cn irs t v cng
dO
din
tng
lun
dao
.ing lech
pha
.na rD
rd.
.
cnc
d
din
ljng v cm ,tns t ln d dng cilng
ha.
D,
vc
to cn e
t
veclo cmg d din nng lun ngqc h6ns-
c
50:
l.n' aor
@
ntuC
(,.di&.lao
dncd;u
ha
phl
biu
no
sr d)
si?
(
re..hr
din o dnsd
eu
oa lun lun rs
A.
tns
dls
nns v
nns ,i dim
tril
ll.
B.
th
nlne
d
vi
1rl
bir.
C.
doe
"og
d h'i djn bd du.
D. dons
nine d
vi
lrl cn ns.
Trs6ca- Mad
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