de thi cuc hay nhung khong dung cau truc dai hoc

W
a. rlF
lc
u. Jl-
fr
C. J2I
{d
,
D- Jri
DAI
HoC
SUPHAIvI HA NOr
.
TRUdNG THPT NGI"TYEN TAT
TUANH
chay
thing
khi
nhi€t
d0
ld :
A.
l2,5oc
B.z4oC
Ki THI
THUDAI
HoC, CAO
DANG
T,AN
T
NAM

2Or1
MON vAr
li
Thdi
gian:
90
phrti
fthdng
kd tha gion
phdt
de)
MA DE 101
CAu
1:
MQt
vdt
rin c6 truc
qpay
c.o
dinh ban dAu
dang
d,?og
y€n.
T6c
dUng
vdo
vg.t
rin i

^

-
r
'
*o
ldm
kh6ng
aOi.
ei6t
ring
mdmen
cin rf
le
voi t6c d0
g6c.
Hoi
vit
s€'chuy6n
momen
luc co do
dQng
nhu
thti ndo?
A.Vat qryy
nhanh dAn d€u
B.
Ban dAu vgt quay
nhanh
dAn,
sau d6 chflm
dAn

r6i drmg
l4i
C. Vft
quay
nhanh din, s-au
t16 chuytin
sqnB
quay
d6u
D.
VAt
quay
nhanh dAn
dAu, sau d6 chuy6n sang
quay
dAu
'
CAu 2:
MQt
thanh rninh
d6ng
ctrdt ti€t diQn d0u,
ttr6i tucrng
m, chiAu
dai
l,
cd
ttrd
quay
xung

quanh
1 trUc rrim ngang di
qua
1-
diu
thanh vi
vudng
g6c
vtri
thanh.
B6
qua
*u
,6t-d t o"
quay
vi
sr?c cin mdi trubng.
Gia
tdc rcri ttr do
id
g.
N6u thanh dugc
tha
kh6ng
vfln
tdc
ban dAu
tu
vi u:
nim ogang thi khi tdi

vi
tri thdng dung thanh
c5 tOC
dQ
g6c
,
bing
:
l
Cf;u
3: M-Qt
mdmen lgc c6 d0 lcrn 6Nm
tdc
dr.rng
vio
I
vf;t
rin c6
rnOmen
qudn
tinh
a5; vOi
t4rc quay
bing 2 kg.m2. ThcridiSm ban dAir khi t6c
dung
m6men
lgc,
v6t
dang
quay

voi
tdc
d0
^l^
ra\-^l/- cr^ rA-
-'tr
:+-'
^i
-
,{4
-
'
^^
at
^A
,
goc
iiiracis.
5au iUs
v?t
OAr loc
(i!,
goc
rurao/s- rrq r(nl
momen
can tac OUng
len viit
lii
:
A.

8 Nm
8.4 Nm C. 10
Nm
D.2
Nm
Ciu
4:
MQt
chdt
tli6m dao dQng diAu hda voi
bi€n dp
A, chu lc!
T. Tdc
dQ
trung
binh
lcin
nhit
mi v6t
d4t
duo. c trong
l/o
chv
k!
ld:
4'.JZ
Jt
A.r
2 tq, il
r€*

C.r
D.
1r
ciu
5: MQt
ch6t diiSm dao dong diAu hda theo
phuong
trinh:
x=*cosis;rr-fit"t
.
Thoi
diilm
thri
l0l vat
di
qua
vi tri c6
lV ttO
x:ZJl
ctn
ld:
7ZA2
-t
A. 50
1?01
B.
-E6-5
1204
c.
-co-s

i
1?03
":'
D.
-60-s
:'
CAu
6:
LAn lust treo 2 vft c6 khiii
luong
m1 vi m2 vdo
I
ld
xo c6 dQ
cfmg k
=
40
(N/m)
vd
kich
thich
cho chring
dao dQng diAu
hod.
Trong cing mQt
h9*g
thdi
gian
nh6t ttinh
m1 thgc

hi€n
dugc
20 dao tl$ng
vi
m2 thUc hi$n duqc
l0
dao clsng;
N6u
cring treo
ci 2 vQIvdo
lo
xo thi
chu
kj,dao
dQng cria hf b-e z
(s);
m1, m2 c6
gi6
{a
lin luqt
:
A.2kg
;
0,5kg B.0,5kg
;Zkg
C.
lkg,
;0,5kg
D.0,5kg
;

lkg
Cflu
7: MQt con l5c
ld xo ngang, ld xo c6 t10
cring k:2N/cm,
Kich thfch
cho
v{t
OObH
vsi
phuong
trinh
.r
:
6 cos{*rf
*
"1"*.
I(e tt hic khio
*t
a"o dO.tg,
sau khoing thoi
graat=480(s)
v6tttiduo.cqudngduongdAil5cm.L6y,z7:10.xtroiluqrr8criavftba"g '.
A.
0,2kg
8.4009 C.
8009
D. lkg
Cflu
8:

T4i noi ngang bing mgc
nudc
bi€n, d
nhi€t
dO 200C,
I dOng hO
qui
lic
frong I
ngdy
chay
nhanh
6,48
s, thanh
treo con lic c6
h0 sO
ns ddi ],: 2.10-5
K-r.O
v!
tri
n6i
tr6n
dong
hd
*c
8.7
c.27,50C
D.300C
CAu
9: N'{6t'con

lic
don
duerc
freo
0 trAn
I
thang
ryd-v.
Khi
trrang
mdy
dinrg
y€n
n6
dao
ti6hg
di€u
hod
vsi
chu
It
T,
khi
thang-md1,
di
xudng
ina"!
dong,
9.hA;
aAn

acri"oi
gi;;*-J;;=
lon
bing
1/3
giatSc
trong
t*rdngfo
noi
ddt
thani
mayini
roi'raf
iuo-JO"*
di€u
hod
vcri
ch*
kv
i"
Ia:

=.
-,['-
i:
\!t3
B,
.i3
r
:

C.3
r
o. il
r
Cf,u
10:
MQt
con
l6c
don c6
chi6u
ddi_l
:
0,3m
duoc
treo
vdo
trdn
I
toa
xe
lira,
con
lic
bi
kich
'dOng
m6i
th;
brinh

xe cia
toa
xe
gAp
ihdn6i
cria
ciic
il;;;;tit
i;oaog
crich
gi*a
z
moi
.
g,ga
n6i
.uy
ld
12,5m,
eia
t6c
trons
truong,g
:
-;l
Bi€n
d6
aao
agng
cta

con
lic
ndy
ltyn
nh6t
hhi
dodrn
tdu
chuyen'dlng
thing
ia"
"oiTdi
a9
ia:
*jt
jpf]^
.,
.
^
P;
60
(km/h)
c 11,5(km/h)
D.
12,s (km/h)
CAu.11:-
MQt,ddng
hd d6m giay,
m5i'ngey
d6m

chgy
nhanh
i.:or.
phdi
di6u,chinh
d6
ddi
cua
con
ld.c
nhu
th€
ndo
so
vdi
etQ'dii
hiQn tai
ae dong
h6
chay
dring
?
-;

A
,TEng
0,2o/o
.:
=8.
T-dlg

ASyo
C,
Gidm
0,3%
D.
Gi6m
A,2ya
cau
12:
gA
ttti
bidu
di6n
sF
phu
thugc
cria
van
tOc vio
ly
d0
cria
I
DDEH
c6
dqng
,
A.
Dulng
hinh

sin
B,.Dulng
thing
C. Euong
erip
-D.
ild";
paraboi
Csu13:vatDDDH.c6.d6.th!.x(t).nhuhinhve Phuongtiinhdaod6ng'cta;'l;l

tZ tl ,-ir.r
A
=
scosf
i+ff
.ri
*.
;:
ssin{:,-,
*f,irr,1
:
.
iiJl Jr.i
C.,r
=
BsinlSi+;jr;n
D.r=acos{.iirr-li.ru
CAu
t4:
Mdt vdt

DDEH
theo
phucrng
trinh
't':
4
cos
("t
+i)tt,t
. Thoi
gian
ng6n
nh6t
dd
v6t
di htit
do4n
duln g
dni
4iZ
cm
lir :
,
A.
0,50s
8.0,75s
C. o,65s
D.
1,00s
CAu

15:
Chqn
C6u
tri
lcri.dring
khi
n,6i vA
lgc
cang
cria
ddy
teeo
con
l6c
dcrn:
!
A.
Nhu
nhau
tai
mqi
vi
tri
:
B.
Lm
nhdt
tai
VTCB
vA

I6n hirn
trong
lugng
v6t
C.
Lon
nh6t
t4i
vI9!
"l
bing treng
t"sne
Gi
t
D.
Nhd
nhdt
tai
VTCB
vd
nh6-hon
iq"g
r,;q,rl
uat
:
'
CAU
16:
MQt v4t
thgc

hi€n
I
dao
{0ne
tit
din,
cr?
sau
m5i
chu
lr}
bien
d0 giam
z%.
phdn
ndng
luqng
cua
con
lic
m*t
di sau'm5i
dao
dgng
todn ph6n
Id:
A.3,g6Yo
8.4%
:
:

CAu
17:
Tai noi
:6 $iu
tdc
trgng
tniong
g,
I
con
lic
don
DEDH
voi
bi€n
dQ
g6c
o".
L6y
m6c
i
the
nang
o
vi tn
cal
lang !f$
g9n
ldc'chuy€a
dpng

cha-m
ddn
theo
chidu
drn
dln vi
tri
c6
dqng
ndng
blng
3 lAn:thti
nang-tfri
li dQ
g6c
cira lon tt;
;y
birg,__
'

-
-

I
4
{,
a
f(o
A.T
(r,'

B.
-7
t'Tn
C z
cdu
18:
Mdt
con
lic
lo
xo
DDEH
vcri
chu
k! T
vd
bien
d6
l0cm.
thoi
gian
d€
vdt
nh6 cua
con
lic co
d6
run van
r6c
kh6ng

vuor
qud
dQng
cua
vat
lA:
A.0,5Hz:
r'.
tz",
D.
Bi€t
trong
J* cm/s
ld
u
kj'khoing
.
Tin
rO duo
2
ch
T
a
J
l
I). ,:
"'
1
,,
c. t=

"'
B.4.0Hz
-
CAu
19: Dti
2 song
giao
thoa dugc voi nhau thi
cliirng phii
c6 cing
t6n
sd
vd
:
-
'A.
Cirng
bi6n
d6,
cung
pha
B.
Ctng
bi€n
dQ
vd
hipu s6
pha
khdng ddi theo
thdi

gian
C.
Cirng
pha
D. Higu si5
pha
kh0ng ddi theo thcri
gian
Cf,n
20: Chgn
Cdu dring:
Chu
kj's6ng:
A.
La
chu lcj'
chung cria
c6c
phAn
t& khi c6
s6ng truyAn qua
B.
Lq
thcri gian phin
tu
chuy€n
dQng
l, qudng
ducrng bing
I

budc
s6ng
C.
Bdng
nua chu
-t
cria ngudn
phrit
s6ng
D.CeAvdB
Ciu 21:
SSngphanx4:
A.
Ludn lu6n
biAOi adu
so
vcri s6ng
tdi
B.
Bi aOi adu
khi bi
phe1 x?. tr0n
I vflt
cin cO ainfr
C. Ludn
lu6n l*rdng bi ddi
ddu
D. B!
AOi a6u khi
bi

phdn
x4 tr0n
1 vflt cin
di
dQng
dugc
Cfru 22: Ba di€m
0,4,8
cuttg nim
tr6n I
nria
duong
thing
xu6t
ph6t
tu
0.
Tai 0
dat
I ngudn
di6m
phSt
s6ng
6ni
cting
hucmg ra khdng
gian,
mdi trudmg
lihQng
h6p

thg 6m.
Mric
"oong
aq
6m
tgi A
lA
40d8, t4i B la 20d8. Mric
culng
d$
nm
tai tmng
di0m
M cria doan
AB
li:
A.30,0
dB" B.
10,0d8 c,25,2d8,
f).32,5d8.
Cf;u 23:
O
m{tthodng cta I
chit l6ng c6 2 ngudn ktit
hqp
A
vi
B c6ch nhau
10cm,
dao

dQng
theo
phuamg
thdng
tlirng
vgi
phuor1g trinh
ue:Zcos4oiif
vd
ua
=2cos{*0ni+'.ai
trong
d6
u;(mm),
gs(mm),
t(s). TOc d$ truyfr
s6ng tr€n
m{t chit
long ld 30crn/s.
Xdt
hinh vu6ng
AMNB
thuQc m{t
&o6ng
chit l6ng. Sd
Oiem dao d$ng
vsi
biOn dQ cgc
d4i tr€n
dopn BM

ld:
A_9
B-
10
c- il
n 1?
Ciu 24:
Trong thi
nghi$m
giao
thoa tr€n.m{t nufc, 2
ngu6n t6t
trqp
Ad
duo
dQng
cing
pha
vtri
tin sO
30H2, AB'-i 8c'm,
ti5c
d0
truyAn
s6ng
tr€n
mit nudc
ld 30cmls.,M$t
dudrng
trdn

c6
tdm
li trung.dii5m
cfia
AIi, nim
tr€n
m{t
nudc,
c6
bAn
ki",!,,3
cm,,S5
ditSm dao
dgng'voi
bien
rlQ
cgc tlai
nim tr6n dudmg
h6n
ld:
:
4.24
B 26 c. 14
D.
t2
CAu 25:
Hai ngudin s5ng tr0n
mflt
nudc
Sr,Sz cdch nhau

7-1
(2
li bu6c
16rg)
ph6t
ra 2
s6ng
lAn
luqt ld
lr'
-
ssinidt
vd'u"
:acos.l.rr,
s6ng
khdng suy
gi6m.
Ei0m
M
nim
d mit nudc, tr€n
dudrng
trung truc cia
SrSz,
gin
nh6t
dao dQng cirng
pha
vdi
51

,cdchS1"i
kho?ng:
A.3ls
]-
:
8.33a
)
C.258
|
,i
D.324
CAu 26:
MQt sqr diy kirn logi
clng
gita
2
diiim
c6 dinh
cdch
nhau 1,2m. EAt I nam
chdm
di-en
lai
gan
sqr dffy,
khi cho
ddng
di$n
xoay
chiAu

tin
s0
50Hz
qua
nam ch6m
thi
tuen sgi
dAy
quan
siit dugc
s6ng dirng vni 3
bUng
s6ng. Vfln tOc truy€n
s6ng
trOn ddy
ld:
A.40
m/s
B. 80m/s
C.20mls
D. 160m/s
Ciu 27:
S6ng diQn
tu
li
qu6
trinh
lan
truydn trong
khdng gian

cria mQt dign
tu trubng bi6n
thi6n.
K6t lqnnio
sau
aay
fa sai
khi n6i
vd
tuong
quan
gitu
F
vA
F
cta die1r't&
trudrng
d6:
A.
F
vd
E
Uiiin
thi6n didu hda
voi ctng tAn
sd
-
B.
.T
vi

3
dao
clOng
theo 2
phuong
vudng
g6c vcri nhau
C.
.9
vd
9
dao
dOng cirng
pha
D.
f: I'.
3
theo
thft t.u
tao thdnh mQt
tam di€n thuan
(i'
ld
van
toc truyin s6ng)
Ciu 28:
Nguy€n t6c
cria
mach
chgn

s6ng
trong
mdy
thu
thanh duoc dua
vAo
hi0n tugng
:
A.
Giao thoa
song B" C6ng
hudng
di$n tu C. Nhi€u xa
D. S6ng dimg.
CAU'29:
MQt
rn4ch
dao
dong
tii$n
f-r
ly
tudng
dang
dao.dQng.tg
do.
Tqi
th6i
di€m
r

= 0
di€n
tich
tr€n
1
tran
tu
tli6n
cuc
dii-
sau
khoang
tr,;i
gion
rig*n
nh6t
iO-bs
thi
dign
tictr
tr.€n
ban
iu:
na,v
bdng
nria gi6
tri
cuc
eai.
ihu

k;',
dao
a0]-,g
ri€ng
cfia
m4ch
dao
dong
ndy
rd:
A.4.i0-6s
B.
6.i0
6s
-
Y
'D',
i.
:.
t0*
D.
i2.
l0_6s
cflu
30:
Trong
ih6ng
rin
lien
lac

bing
so'g
v6;t61;F1{oi
ta
su
dung
crich
bi6n
digu
bi6n
d6'
tuc
Id
ldm
cho
bi6n
dd
cria
sdng
diQn
tJ
."o
1i"
lqeira
,ong
Lu'g)
bi6n
thi€n
theo
thcrigian

v'ei
tan
to
bing
tan
sd
cua
aao
iqng
a*
ta".
cr.o
i"an
J
J.'!o"g
mang
Id
i
000
kHz.
Khi
f,Hi";T.:fff.#1"::illffid"",n'e'
i-auo
done
t"a*;;t;
ir,i
auo
dong
"^"
,a,',r,i"

A.800
B.
1000
c.
1250
D.
1600
cau
31:
Trong
dao
d6ng
di6n,
dai
lurr*-e
tuong
*g
uoi
tuc
h6i phuc
"u""*""JJ"g
c,li:
A-ur-
B.u"
c.q
D.i
cau
32:
Mfc
giira

2
bdn
r-u
t
higu
diQn
th6
*ouv'"iieu,
ta
x6c
dinh
duoc
gia
,.j
tric
thdi
crra
hi€u
di0n
th6
vd
cuong
d6
dong
di6n
vdo
thcri
ditlm
r,
ia

,,
I6J;C
iD,
ir:
rTA;
Vdo
rhcri
diiiin
t2
iii
ur
:
60r'?
(V),
ir:v?A.
Dung
kh6ng
cria
tu
dign
c6
gi6
tri:
'
j
.{.601.50
g.
zo.€
o.
'

c.
oo
o
D.30t?
g
CAu
33:
cho
mach'diqn
RLC
mic
n5i
ticp,
tin
si;;
dong
diqn
rd
ritri"rg,l
day.thudn
cirn,
c:1}412q
(F),
R
=
50o€
fi
.
D€'hit,;,r1i€n'thti,
gi*a

2
dau
tir
di€n
igch
prru
i
so
vrii
hidu
di€n
thil
g;,tra'zda;;?;h
ai+"
iirir
c6 gi6
tr!
:
5rL1{1
z
uilu
tlr
n19r
A.
s/2n
{H)
B.
3i2tr
{H)
C

.
t/?n
{H)
s
.
j/zn
{H)
:
CAu
34:
MOt
den
dng
duoc
mic
vd,o
t
hi€u
a;en
thj
x"'_ii
"fria.
I
lOV_
50H2.
Ddn
chi
s6ng
*:uU
lmr

hi$u
diqn
th6
firc
thni
kh6ng
nh6
ircrn
77,Bv.Thoi
gian
aJn
,a"g
ffong
ts
ld
:
,
1:
A.5'
B.Ts
C.;'
I
'j
S:ffi;X-:lrX;o;1icn
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