THI LÝ 2010 (CVA HN)

Van tOc zinh siing chi plrLr thLrOc viio rA-n so cua];hO ron D.. Va'tdc iinh sdrrg phu thuoc u}o.,cii-moi rrtLtr.n!'vaien ,ocua ph... {ttu-27: MQt sgi tliiy dAn hdi cliri l00cm, mot dau

so GD - or Ha ruOr

f nU'Oi'lC Tt{pT CllU Vrtr,,l aN DE TFII TH-U DAI I-IQC

1/'ru TFIIJNHAT NAM HOC(2009-2O IO)

nd rnl r!{Ac NGr{r0M naON: vAr'r.i

Thd'i gian ldm brii: 90 phtit

(60 cau triic nghi€rii)

Ho tOn:

So brio clanh:

Cgs]r Ph6 ron;,

;\ NAng luo-ng B Khdi luong nghi C T5e palg

D Di€' tfc5 Cau 2: plrdt bidu naoiau day ching nha.t:' ! tru rrctrEr u

A VAn toc i{nh siing lu6n bang c

= 3.10s m/s

B VAn toc rinh sdn[ chi ptrLr rtiuOc vAo nr6i rrtid.ng

C Van tOc zinh siing chi plrLr thLrOc viio rA-n so cua];hO ron

D Va'tdc iinh sdrrg phu thuoc u}o.,cii-moi rrtLtr.n!'vaien

,ocua ph t6n

caiu 3: Tai thdi didm r, o9 prrong xa cita rnaLr char rir i vrr i"i rrro'i cridrn r, ri y NeLr crru r<j, biin rfr cua chiir

'ph<5ng

x;r li r thi so hat nharipharira rr.orrg r,rroa,rg rr,Ji ainn ,, -,,,,

cau 4: Czic hat triti (T) vir clotOri (D) than gizr pliein Lirrg nhi€t iinch si,rh r.a hai a vr)r rlotror.r bic{t ri htrr khoi cfril

naA gtr: t z.z

Mev

^, ) nirng ltrclrg toii

L-triti lA A,,,1.= 0,0087u, cira dotCri A,,,,r=0,0024tr, cr'ra lrat 1;1: A,,,,, =0,0305u (ltr = 93 l,-5

lii tiL phiin L'lttg tren:

;\ 18,06 (Mev) _ B 38,73 (Mev) C t8,06 (J)

D 38.73 (J) CAu 5: F[iQn tugng quang dAn li hi6n tuong

A Girirn *a'rr cii€n tro s,at ct'ra ctril birn clAn khi bi chieu sring

B Giilm rnanh cri€n tro cira m6r s6 kim roai r.rri ,r,iq.l i€ir siing

C Chat brin df;n khi cluo-c chi6u siing s6 ngiurg clan.ciien

D Dien rro cira kirn loai tang l0n khi bi chieu siing

#',fl:ti,l'?HTl lt3t,fltt' r'ie ioie" rlte U^, = leee-5 (V) ciien tii bin ra rir ca tor cd ci6ng

'ing rr'' ri,iLr rir

A f = 3.l0r5 (Ilz) B f = 5,43.10,,, (l-lz) C l.< 4,g3.lore (Hz) D f = 5,43 lOri (llz.)

cirr 7: Iludc s<lng.cldi nhat cfra quang phd thuoc z aayl-oi,rlan

'i\ Banrne lii' lrro-t lzl: 0.l2lg (lLrr): 0.6.56.r

(iLm) Vach tlrf 2 cdra crdy r,airna' c6 LrLrric s6ng rii: r.rr rlrur r(t' virzro \ftrrr/'

t ]" = 0,1037 (prm) Il l

= 0,1038 (FLm)

I) i

= o.iozt: (l,n-rt

cau {l: Bii' ki'h c1Lr!.ciao Bo l} ri, = 0,53 10 t"-tyi2 N;;;; j"d cLrc crai cld

ion rroii ng,y€n tir Hycrio rA A = r3,-58

(ev) Khi nguy€n A -2,26 (ev) tu mi elecrron s 6"qu! _b,-8+e clero re;l r,, = D.OS tO c 'fr1mi,iTrl ,lang i,-ii-i."1 \ lLlo ng 6 rrang thi{i n _0.377 (evrdimg E,, c6 gi/r tr.i lA:

(lau 9: Chon cAu sai

A Anh sting clon sfrc li iinh si4ng ccl riin s0 xtic tlinh

ll' Tia td'i Iaing kirlh cd rniLr naolkhtic xa r-a t,", iing kfnh c6 rnaLr clo, rhi ria tdi lA tinh sii'g clo-n sic

c' chirr-n tia tdi lang kinh lir chirin song song,

chr'ru-r khuc xa van song song th) chirrn siirrg niy lh clon sic

D' Mor chirm sr{'[ d6, kh6'g ntrat tt]iet cii re ert*ang'oon si

Cau l0: Phrin fng nhi€t liach le pirail ,irlg lror ,rtran

A Toh ra m6t nhiet lu.ong ld.n

I rrr nang iu'ong r,h;;;;;r;'xor nhier cio cao rndi rhrrc hi€n cruoc

:^ l{"p thu nrot nlier tu.o:ng ltin '

D' Jl'orls cJ6 hzrt ntran ctrairic nguyen rir bi rrrrrrg nriug chiiy t5.inh ciic pLrclo'

Carr Il:.Song si-eu Arn lh sdng c6;

1 Jd do l6.n hon 340rn/s ' lJ Tdn so rr0n 2ol{Flz

._ C_ l'oc ci6 nh6 hon 34Om/s O i.an sd rrho h<rrr l6Hz

cau l2: T|ong thf nghi€m giao thoa khe IAng, nq-u6n sting S flriit ra cldng thd.i 2 bfrc xa; 1., = 0.6purr vi\ l-,; a =

S,S' = 0'2 (nlrll); D = Irn tllng klroting,0,,g L = ?.2fc111 rr.6n rr1\p rlern cjrrcrc l7 r,iic6 sdng tr.ong iiti cti 3 r,acl lir '\ 0,4811ni B O,.l0lrnr (i 0,.,14pLrrr

D 0,50;L'r

**#-.t.'."ng.thf tlghiern giao tlttla t,t," t^ng a - 2nnr, I) = 2nr ngrron Phrit r.a zinh siirg ilrr' siic.'l'ai

'i rri ciielj

\/illl ll'tlilg ilitti o'(l (rrtrtl) cti t.ttot v;rclt siing [3Lrcic s(lrrg ct'iir iirrh siirrg (loll s^c cri gili Lri:

( Prrec i /5

A l hieu dfr kiOn 13' )', = 0'4 (PLrn)

cau 14: lvlot rnacli clao c16ng LC, ti rhbi ciidrn ban rliu clierr tich iien tLr ciien d4t .,-rc cloi Q,, = l0 *c' 'lhdi gian tlil

- - -tq t{r-6-nglrct-d-rQn tich li 2pLs' CLrdng clQ hiQtl4UIte gi'jt tldng dien tlong-rna-ch lir:

,\'is;'il B'1's?i;'A " c' 7'85rnr\ D' 78'52ntA CaLrl5:r.''ng'"e.'nguydntitBo,trarigtlr6idl.rrglittt.lrrgtlit,ti:

rf fvf,i"to cO tnE t?nh clLro-c clinh xirc nting ltLo-'g cr"ra n6'

ts Nguy€n tit khOng hap thu iiartg

lLLgng-' C Tt?t s ;;

"ilv'; tu'c6 nang lirong xirc ciinh vh

khong bri'c xa

n fr4a

'iing tuq'ig nguyert tir l'hong

tlr6 thay tlcii cltio-c'

cau 16: .rrorg

.rerch ciao oong i, C oig,t-ro,r1r,a,ir,.1-,"J,rrriang ki c.Lr-srlu uhlLtrg khoh.g tlibi gia' bAng 0'2'5' lt)

,

1s; rh.i ,ra,-,gT.iq,re ciien tr;o'g1ai bang rr,ng lso.tr-e ttl triLO'nglCh'ky dao c16'g cira mzrch lir:

n.t0'(s)B.0,rtl6'l'i';""'='-c'o's'td:u(t)D'2'100(s)

**f'#;lrunXi,ftli,'""j'f,Sttfil hl.rlfn rro'g chan $ol'e duoi crang s6rrg, cto rh s6ng cri.n tir

B s6ng cli6n til tan rruydn vdi vln ioc rdt 16" i;';;;; ctian t<trorig van toci16 ba.g 3' 10*rn/l Sl::1,?X':Jl',T,'lf:9,,'flgg,l,1li'i,.",,* q'ir rr).n ran rr:uv€n s6ng dien.tir thi cii0n trtLd'g

bierr thi€ vir tir

trub.n-e bid#1,iil';;;;0."s;ffiq;il;"i;t,ii,ng u,,ong g6c vdi phLrong trLrvdn s6ng'

A S6ng dien tir mang nang luong ^ .r-:A., .,,,A-rr ,.1', rr'rr'

lJ C6 thh'h phAn clie',a fi]Anft p"hrin tir bi€* tlii€rl vt-tOttg pha uhau'

D 56rr! cli0n tir c6 th€ phin x4, kliric xtt

nh sd'g c = 3.lgsm/s l1L6c s6rrg clie n

cnir 19: m:rch chon s6ng rniiythu gdrn L= 6'76!LIl' c= l-50pF' toc dQzinh sang c = -J'lU rT/s

tir m)r rndY thu dr-ro-c lh:

r\ 50rn tll'l' 60''.' C' 4orrr D' Torl

Cau 20: Dbng c1i0n tro,'g *4t1"' L'.C ly tuong c5 L = 44ll c6 dd thi

t f,i't f.rintt vEr trr clien c5 di0n clung lit:

L'Au 21: nrachnoi tiep c6 U, R, L' C thong cldi' o thay ddi citrgc'

maclt clang cOng hutrng, Ia iiug to rnQt ctrfrt tiL gi6 tri cOng huong'

ptiat UieLr uLo sirtt dAy l<hOng chittlr xac-:

{ I gitim " B' Un giAm

il:,uigiat" *"D u.,giA'n- 4 ,

:a -*a.- ,r.A ,, - rT

,uorrlt*u,iiTli:,,.rien eonrDn ,Y;;illJ'r, ciat hi€Lr cii.' the 11 = u,,cost,rr cudng ci6 dbng cri€' t€ctr ph, so vo'i

hieu cli6n the 2 ctdLr ,r,t',"I-, 1 Ll'it

.J

A o) - lJ u) = E C' cl,= RL'J3

D' 'ul = L

carr 23: vdi uR,ll,u,, LrR Lrr:1, r:y Jigie'iip hiQLr

lqng,Yetftc thoi cia l{' l'' c' I vh i lit crrdrtg tlo clorrg tlien

hiOr-r clLrng vir tfrc UrOi qi^ cli.pildn tir cl6 Bidtr t6ltc khO'g drhng ll:

n r-Uo B.i=\ r=9 o.i=*

A

Ciu24:l(hi bi€n th€ hoat cl6ng vri'i che clQ-k1iort,*

lti;::ltr lt\ rn4ch thtl cap

dd ho)' Chon phirt bidu dfrng:

-e

Cr.tb'ng t10 liiert clutlg qi:a cuQu so cap l' = U vl lz = u'

B CtLo'ng clO clbng tli6n so citp rAt nl16

c ctLOug d0 cldng soc,ip l, = + r-at l(rn ud'u l,= 0 ruy nhi€n cuou socap khorrg tieu thu coug sttat'

1-l

ce,, zs?M:1 l;5, 5"l,Tol,'J ,., ! .b:",.r:,rr* rri0u cri€' rrro 2

rliiLr ru: Lr=U,,cos r0.ooor' c = r Ft-' L bii.g:

i\ rO, (l-r)

-rqv \r\-DIj

z.rO' (tti "'="'t +.tO'(ttl' D''i02(ll)

s"Zo;r:'iil;:i:iiisT;?,;""r,il:,;1'*:lll;,,,u ,* ( i ,r.rii'g thi:ri crao clo'g D crr*r r<! rrao cl6'g

' (iragc 2/5)

{)ttu-27: MQt sgi tliiy dAn hdi cliri l00cm, mot dau clLloc noi vio mcit uhiiuli aur rhoa rliiu kia glLr.co tlirrli lilr Iirn thoa dao dong.f =2OOl-Iz thi tao ra sdng cliuig t|en clay Biet van toc truy€n s6ng r,

= -50r11/s Coi diiLr rrlririlt arn -,,-A.8- tJroa lI rnot cli€il c6 cjinh so - B, bLrng 10,-_- s6nglren clay c.g li: _D.-6,

Carr 2ll:.Chon ra.plri{r bidu dring khi b}n vd tilrrudng.l,iny trong ci6ng cokli6lg cldng bo.

$ j.u"truolg qu_ay rrong dong cd clo narn chim-oriay gay ra

q qli c6 ddng 3 pha mdi gay ra ctu'oc rir.rrud.ng qr.,iy- '

! ltri cd ddng I pha rn6i gay ra dLLoc tir.t,.,dn! qurj,

I), Cd A, B, C ctdu l2l phrir iiieu kh6ng chfnh xril '

-Ci:: 29: Vdi mach xoay chitiu chrlra C, L thkldng cli0n i:

,'\ vai diOn iip Lr lrai dziu mach lu6n vuong pha

C vI di€n ilrp Lr hai cldu ntach tirOn cirng plia

B r,A cli€n zip u hai dALr urach li.ron pgrro-c irha

D s5'm pha lion di6n rip hai ri.iLr nrac.ir 9()'l

cirr 30: cho mach R = 100o L c= 9,0, rn6c noi rieb Dar vho2 cltiLr mach hi€Lr dien rhc xoay chiciLr riirr

so 1'= -50llz tlr'i U^,,r,,\ U,,r, r,u6'g nn.1;,

'hau Giei,ri f- fa,

)

A I_ = _(Ij)

n

t;

'17

CAu 31: MOt vAt tham gia cldng thdi 2 clao c10ng: x, = r\,cos(c,rr- I ) (cn);

Xz = 3cos (ot+I) (crn) rrdio: = 2}radls.Bid[ \,,,,.,, = l40cnr/s Bi€n ri6 A, cira clao flong tfifr I lz):

a

'!

R L =:(LI)

n

I

l) L = -(H)

7t

(lrru 32: N"ltlt vat clttryen dong theo phuong tr"inh: x = -cos(4nt 4 r(crl) 'lirn ciru tr.ii to'i rtring:

J r\ VAt nz\y klidng clao clong tlidLr hoir vi c6bi0n ci6 Arn.

IJ \'et n2iy clao c16ng v6.i bi€n d0 lcrl vh tdn so 4nIlz

c f:-ri r - 0 r'4t cd ly cro x = 0.5 cm

'i crang cli vd vi tri ca' ba'g D- Tai t = 0 vAt cd ly cr6 x = 0,5cnr vA crang* cli ra x;i vi trf can biing

Ciu 33: Chon phr{t bidu chfnh xi{c nhdt:

A' Tai .gLrdl l<horrg ngrre cruoc sidu am rir cro tdn so clud cao

1l 'I'ai ngLLd'i khOng nglte ciLroc sdng ha anr vi sdng nay c,i nalg luo-ng qud lho

!t-!^i ngu'bi khong,.,gl'," otio,'2li4i ar4 n6i rr€;le vi tai ngudi clii c6rig hrLdng vd.i czic tdn so tiL t6t-i;: den 20.0o0FI2 Si€u am vh haim cd d6 nhiiy bring 0 crtii r,di tai ngud'i.

D Ce A, B, C ctdu ctLlng.

L^1u 3a: Dao ci6ng didLr IioA cd phuo'ng trinh: x - Acos(-5nr + n) I(d ril lric r = 0, ldp rlti 9 nri cl'.g

'ir'g btlrg the nang li:

4.772A G) B 57120 (s) C 17120 (s) D Idet qLrA t<hi:rc

cau 35: MQt song co lan truy€' trong mdt ur0i r.rd'rig vo'i prruoLrg tr-inh:

r'r =4cosl -r+ aJ(cnr)-Trortgd6: cl tfrrhbnngrn,ttfnhbirnggiay.VAnroctr.Lrydlsdngit\;

CAU 36: VAt clao clOng clidu hoi khi:

A' Qrra vi rr-f cAn bring toc rlo bang 0, do rtin gia toc bang krr6rrg.

\ozbien'tocr1obeing0,c1ololigizrtocbirrrgklrorrg.

C QLra'i rri ca' birng toc cro bang-khong cr6 ion gia'ro crLc ciai.

^_I)- Quo vi rr-i cAn birng roc cio cuclJai, gii rOc bang''0.

Cau 37: vat clao rlorrg cii€u tti uoi'.t'ri'k},'T.ihd'i giu,r ,rgan nhat cle var di rir vi rr-i ca' birng rle'ri

'i rr.i co ly cl6 bing ll2 bien cio li: "J ^' ^ ""'b""'rrb("' rrr

D T/tZ

Carl 'l'9: "li'orlg clttii l|irtlt

nlot va{ claoclong ciiorr hoi\ tip hcrp 3 riai lrrong ni'ro sau cluy riotr cd gili tr.i l<irong tlOi'l

1) _!l],,tdc lrrc ctr-rr-rrq li Ili€rr rio, ri, s go., glu roc 5"'

(l l'iirr s<j{:(ic, gilr tirc,lr.rc

f .r C'1t',,r,,S, bitlir cio riirr so g(rc (lr1gc 3l_5)

IrLc

@lp -j

AI\48

D ,5cm/s

C .5rr/s

carr.xg: Mot song co hoc trr-rydu qua mot Iroi tnrd'ng vtlt.cllat ket lUAn triio sartclAy lh sai?

.=.*,r

Van to clao c16'g cua cdc phdn tir

'rOi tr-r-rbLrg bang toc dO trtrydn.s6ng'

B Tr.ong t trong t<tri]cac phdn tir khi clao clOng theo plrtrong truydrl sdng

- -C Tr6n ,"Ii tiiia.;l6cplidir tirirLroc clao cl6ng: theophtro'ng vrtong g6c v6'i mlt nttd'c

D Circ ptrdn tir m0i truong dao cl0ng l<lri cd song.tr-uydn qLra

cittr 40: Dao clong rli(iLr hoi,L cri phr.roilg tlinh: x = 2cos {2trt +

| (, I tcrnl Ldn tlll]r 2009 v4t lrl qtrll vi tli cti ly ti<i x

= -l (crn) lir vho thb'i clidnr:

A 1004,25 (s)

pnA, A, ft*" ,ttr'r'rrg tri,rh rh"d" hoac phdn B theo chrto'rzg trinlt rtdrtg ccto

^Plr-(i,,

A' TJrno cl,u','''lu ti"l' 'J"'i" (Tt''' tA" 4l

'10" ''fi"50' Ciu 4l: Di0n tir trudng sinh ra b6'i:

-A

Quii cdu ticli clien khong ddi'.dii,t co dinh 9 c0 l4l .

e Mgt tLr ciiQn xd'c clinh c6lien rich khOng deii' d4t co l4p

C DOng ciien khOng cldi chay qrta ong clAy xhc clinh

Ciu 42: Dirt viro 2 cllirr cloan

'rarch chi c<i rn6t phiin tiL mot hiOtrcti6n tlte xoay chidLr: rt = Lj,,sitt (trtl + - ) (r') thi

3n

clbng clie n chay clua phdn tii' c16 c6 bidLr thric i = I,,cos (tr:t

7 I (A)' Phdn tit dd ll:

C CuQn clAy thuiin ctirn D' CLrOn dAy c6 di6n tro

')

carr43:cu6rclayth*rincei'r: L=!(ll)micnoi ticpv6itLrC=3l,BpFclidntlpdatvdo2dducuonday: t-t =

1l

lO0 cos ( tOOnt + ; ) tui Ilidu thric clbng dien quir ulerch ll'i

b

Il 0,25 (s) C 2008,25(s) D (0,25+k)

lt

r\ i ; 0,5 cos(lOOirt - 5 ) tn)

It

B i = 0,-5 cos(lO0nt + ; ) (A)

J

C i=cos(l00nt* lltr,l ) D' i=c(rs(l00nt- {l to'

cau 44: l-zri s tr.€n mirr nudc .guiin so'g phirt rii ilao c'-ong cliSu hoh vdi f = 50Hz' -fai 2 didm M

'ir N tr€n

prrLro'g rruydn s6ng (MN = gcur)dao_crEng cirng pha_vdi-nhaLr (bict van toc tr*ydn s6ng.am tro'g khoting tir

lOcrn/i rten 80cnr/s)' VAn toc truydn s6ng tr0n mitt nLtdc llt:

cau 45: Trong rhier bi klie la'g ngud phdt ra bfrc xa clon sirc c6 br-rdc s6ng o trong-k-liorru o7l-Lrn tfd' 0;761-rrn'

a = 2rnm D = 2m Tai 'i trf c6ch van trung taur l,-55 (rn''r) li\ mot vacl] sr{ng Budc

s6ng ciia virch sii.g d6 li'\:

Cl 0.-516 (Ptm) D' 0'65 (Prm)

.

Criu46: MotvatdaoclOngciidLrhol.tocctQctravAt'9::9d4ikhi: t ^., , ,.it,-.ri,rolrl'n

:.\

LU UO .i o uii & ,iQ l6n cLlc cl4i 'i B LU tiic c'.r'g vtio vAt b.ing kh6'g

C Gia toc cria

"ai"O Ao tOn iut tiai D' Pha ban cidu cuc cl:ri

cfrr 47:Lf clo.td ,rguoirrinuon thay the ngudn nnng lugng.pian hacir bing nztng lLLgng lhie t hzrch lit Vi:

A'Clriphiclduttrtlr{p-I],Ciirthirnhdienrrirrrgre

C NgLryen iie,, cl6i clno D' De vAn ltlult

cAu 4ll; Giir sir saLr 4 gib (kd tir thdiclidm ba' cld.) sd har',rtran

"iu, ntnLr chat cldng

vi ph6'g xzr l'ri phan rf, l'rarrg

75a/o s|lrat nhAu ban cldr,r chu k],brin ra cira chat phting xar c16 trang:

.r\ 4 gio ''"" -t'-U ') giO C' 3 gid' ' B gid

Cirrr 49: Dao clo'g clidu hoi c6 prruo'g rri'h rt\ x = 4cos (l0nt-f l t.,r.,l.'l'ho"i clidm cld* ti.rr (satr thdi didnr t = 0) uiir r,ait lip liri vi tt'i batr tliitr Ii ltic:

12lll z\ t, = - (s) li [, =: (s) C' t, = lt (t' D t' = - ts)

(Pagc 4/-5)

1T 1l

Xr =4cos (l0t + - ) (crrr): xr = r\,sirr (l0t - -) (crir)

44

Do-l6nviurtoc-cira\/Atkhi c}rai,i tlicirutranglz\30cni/s BierrdOdaodQngl\2 l;\:

,t'

R.-12

I

B.'

t,

Cl Tcrn

T

c 16

l) Tcrn vI .l cm

T

D.-1A

L+

f!fu n: f nco cnrcns

Carr 51: MOt lLro-ng chat ph6ng xa Rn 222, c6l<lroi luo-ng ban ciAu lI lmg Sau 15,2 ngAy thi l<hoi luong cuit rt6

cdn lai 6,25Vo (No = 6,02.102r mol-') DO ph6ng xa cizr chat phdng xii tai thdi didrn nt\y lir:

A.'ll = 3.58.tOrr Bq B I-l = 0,9'l ci C I-l = 3,,58.10r" Bq D H = 3-5,8 ci

Ciu 52: Bidu rhri'c tidng ciiOn tlong marcli l,ir: i= 4sin l00nt (A) (i do bAng giay;.Tai thoi di€rl tr nao ckl tlt)rtg cli€n clang giarl vd c6 cudrrg dO lA 24.Een thdi cliim [ = [r ]-0,00-5 (s) ctLo'ng c16 cldng di€n biurg:

A.2\,5 (A) 11 -2.,6 (A) C.2 (A) D -2 (,'\)

Cau 5f: M6t sdng Am c6 ciang hinh ciiu ciuo-c phiit ra til rnot ngudn didm c6 cOng sLr{t lW (n = -1.14) r'ir giii stL rlng rndi trudng khong hdp tiru iim, t4i ciidl ciich ngudn lrn cti cudrrg dO Am bAng:

Cau 54: MOt con lac do-n tleo rr'en tharrg nrtiy clao clOng clidLr hoA chu kj,T khi thang n-rtiy cliltrg yOn Netr tltang nidy di lOn nhiinh clSin cldu i,6i A = 9 tf.ri chLr k! dao c16ng cira con l5c li:

l0

V9

Cau 55: Mot mach clao ciong LC ciang dao dong vdi chu l<| T, thb'i gian ngin nhat lcd tir lLic nzing ltro-ng tir bring

3 nAiig lLr'o-ng di€n, dOn lfrc nang lLro-rrg di€n bang 3 nitrrg luong tit ll:

'r

A.-6

CAu 56: Gia toc tiep tuyeir clac tlurrg cho bien dtii

A Phuong'cua gia toc g6c B Phr-rong cira vAn toc

C D0 ldn cira vAn toc g6c D D0 lo-n cira vAn toc dhi

Cau 57: Khi vAt rAn clLray ddu clLranh m6t trurc cd dirrh, rn0t didrn tren vat khong ll-ru6c truc cluay c6:

r\ Vdc to \/an toc dr\i bien ddi IJ DO lcn vAn toc dhi bien ddi

C Vic to vAn toc dli khong ddi D {)o l6'n vAn toc gric bien cldi

Cau 5[i: I(hi nrot ci{i thu'dc chuydn clong theo phLtong chiiiu d:\i cira n6 r,6'i toc dO v, d0 d}i ciia tltrL6c:

f)

' A Ddn ra theo ti re ./f - {

Vc'

B Co lai ti le vdi rot do cira rhLLdc

C Din ra phr.r thuOc vi\o toc do cira thrtci'c.

D Co lai tlieo ti l€

CAu 59: Anh sdug hLrjrnh qLlang lt\ iinh siing phdt ciuang:

A Tdn tai rn0t thdi gian sau khi tat 5nh si{ng kfch thich

ll I-ldu nhu tft ngay sau khi tit dnh si{ng kich thich

C Cd bLtoc s6ng nhd hcrn bLtcic s6ng irnh siing kich thich

D Do czic Linh rhd phdt ra, sau khi dtLoc kich tiricli bring 6nh sting thiclr hop

CArr 6{}: Ilai dia nim ngang c6 cirng trulc quay Dra I cr5 r.n6 nren qudn tinh l, quay vrii toc do gdc r0,, Dia 2 cti

tt.t6 tretr c1Lri,'ru tiuh lr, lLic riiiu ciring yen cho dla 2 roi nhe xuOng cila L Do circ mlit ti€! xfrc nh/un u€n cii 2 tila

c0

sau khi th6i truo-t tr€n nhau thi c6 cirng rnOt roc do gric ro '['i so -" lz]:

(l)^

,, [,

I,

I,

t

I, r l D It

( Pagc t /.5 )

DAP Ax ui THr rntJDAr Hoc rAx r

gqtl!

('att -1.?

(.lu-tt -i.l t:1!;1q -iJ Cau 35

Trubng THF"[ Chu Van An - FIi Nr)i

C'1ity I

('titt 2 ('titt -l

('titr .l

Cdtr -5

Cau 13

Ctiu l4 (.';rit t I -i ('titt I 6

('dtt I

,y'

Cuu l8

Cau 26 C-titt 27 ('ciir J1l ('<irt.)() ('dtt -j0

A l)

c:

A

A

A]

C

(:

(:

A

A

a

A

!) B

A

D :l

t)

(.au 44 ('dtr -/.5 ('_ayt.l1i

ll'!,!lt :l ,r'

Cau 48

Cau 56

(.au -57

('_c1y 5,j

('!yt 5!,t

(.'att h0

A a

B

(:

B Cau 38

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