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Tru&ng THPT CAn Giu0c
TAvflt lli
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Ul fn6 ndo lA tu truong <tdu fchi v€ ctic dudng suc cua tu tr,lUng dCu c6 gi .in cht f?
c/ PMt Ui6q quy tg bdn tay fi6i gtrg Cd xt Ciott ctriAu cua luiJtir t6c drirg l6n cloan
d6y ddn mang r san rnang aOng <li$n oong otgn oa[ tt4t Irong tu Iu t"*ng-urrrng
u 2: al hrc Lorenxo l* g, t H6y vi6t Ui6u thirc tinh tl$ lOn cria lrrc Lorenxd( Ch0 thich c6c C.*u.2: al
dpi luqng va tlon vi )
b/ M$tlrat Electron chuy6n tt$ng voi vfln t6c v fiong khu vuc c6 tir
ku&ng E Ai chiu lry lorenxo ttrc dung (? n&m m{t'phlng htnh ve ) HEy vC v6c to f(lgc lorenxo)
Ctu 3 a/ Nguy6n nh&r sinh ddng tli€n cim rmg hong mech tli$n.Hnh
b/ Ktrung d$y ABCD &rgc k6o chuydn dQng *ring tldu vdi v$n tdc V ra xa dCn dbng tliQn ttring I nhuhinh v€ H0y cho bi6t ctriAu cua ddng tli€n cdm img khung dty tt6 GiAi thich?
$,*t!,,.{;
,l]n:
-alOlnh nghPhr€n.hqg khtc rc {r,h s{r,g vd ph6t Ui6u dinh lu6t khtc xa 6nh s6ng
bA.I€u ttiAu kiOn a6 co hiQn trrsng phql e iorlnptrAn vA vi6t c6ng thtu tinh g6c toi-gioi hen
9ef e :Mo.t ngudi mfrt tdt c6 khotng nhin rO til 25 (cm) Ogn vo cub, quan sdt mo.t v4tnh6 qua ki,nh hidn vi c6 v|t Hnh O,-( c6 f, =4mm) vn thi ktutr O, ( c6 f, = 16mm) m@g c6ch O,O, = 20cm fm s6 5Ei
gi4c crla kftrh hidn vi tnong tnrtrng hqp ng{m iUUng &vo cgc Wr, ,l t i
Cf,u 7: MOt lEng kinh c6 ti6t ai6n mfog H m6t tam gi6c ttAu, pt6t ct [m sturg hep song song ktri di qua ttrng kinh c6 g6c lgch cup ti6u td 300
, al tim g6c tdi
-Ul finn-cni6tsuAt cua IIng kinh
cA'{6u sau tt6 ngu0i ta gie; g6c tdi tti mQt chut thi g6c lQch sE tlng hay gi6m? Tpi sao?
C0u8: ,
"lE-Aiiirn cru m^it cfin rhi vi coch Hric phpc
b/ MQt ngudi ,iEo ttri c6 didm'cu.c cfn gdch mir 50 (cm) Khi deo kinh c6 dQ ru + I (dp), ngudi niy sE
nhtn 16 dup nhfrrg vft gdn nh0t cr6ch mit bao nhifu?
Ctu 9: Vtft cta mgt ngUoi c6 di6m cuc vi6n c6ch m{t 50 cm (
al Ngudi nAy bi t$t gi ?
bt Ug"oi tI6 mu6n ihin doq" cdc v0t & r6t xa md khdng cAn cidu ti6t mi ph6i rfeo s4t mit
klnh co dO tu bao nhi6u ?
Cf,u l0 : V0t AB nlm song song vdcich m$t man anh (M ) m$t doan 54 cm Ngu&i ta d{t khoAng Brqa vflt vi man mOt th6u Fi+ ( Truc chinh cua thAu kinh di qua A ia vuong'goc vol men) Qua th6u kinh thu dugc anh a/e/ hiQn 16 tr6n mdn vd cao &pz 6n v6t X6c CinIrIoai
thAu kinh , ti6u cg cua ttr,6u k{nh , khofuig c6ch tu vflt tt6n th6u
kinh-{
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