[r]
(1),tl,' ,l
Tru&ng THPT CAn Giu0c
TAvflt lli
r2c,!1_
-:* q"
Ul
fn6
ndo lA tu truong <tdu fchi v€ ctic dudng suc cua tu tr,lUng dCu c6 gi.in
chtf?
c/ PMt Ui6q quy
tg
bdn tay fi6igtrg
Cdxt
Ciott ctriAu cua luiJtir t6c drirg l6n cloand6y ddn mang r san rnang aOng <li$n oong otgn oa[ tt4t Irong tu Iu
t"*ng-
urrrngu
2:
al hrc Lorenxol*
g,t
H6y vi6t Ui6u thirc tinh tl$ lOn cria lrrc Lorenxd( Ch0 thich c6c C.*u.2: aldpi luqng va tlon vi )
b/
M$tlrat Electron chuy6n tt$ng voi vfln t6c v fiong khu vuc c6tir
ku&ng E
Ai
chiulry
lorenxo ttrc dung(?
n&m m{t'phlng htnh ve ) HEy vC v6c tof(lgc
lorenxo)Ctu
3
a/ Nguy6n nh&r sinh ddng tli€n cim rmg hong mech tli$n.Hnhb/ Ktrung d$y ABCD &rgc k6o chuydn dQng
*ring
tldu vdi v$n tdcV
ra xa dCn dbng tliQn ttring I nhuhinh v€ H0y cho bi6t ctriAu cua ddng tli€n cdm img khung dty tt6 GiAi thich?$,*t!,,.{;
,l]n:
-alOlnh
nghPhr€n.hqg
khtcrc
{r,h s{r,g vd ph6t Ui6u dinh lu6t khtc xa 6nh s6ngbA.I€u ttiAu kiOn a6 co hiQn trrsng phql
e
iorlnptrAn vA vi6t c6ng thtu tinh g6c toi-gioi hen9ef
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, = 20cmfm
s6 5Eigi4c crla kftrh hidn vi tnong tnrtrng hqp ng{m iUUng &vo cgc
Wr,
,lt
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 td300
, 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 rhivi
coch Hric phpcb/ MQt ngudi ,iEo ttri c6 didm'cu.c cfn gdch mir 50 (cm) Khi deo kinh c6 dQ ru + I (dp), ngudi
niy
sEnhtn 16 dup nhfrrg vft gdn nh0t cr6ch mit bao nhifu?
Ctu 9:
Vtft cta mgt ngUoi c6 di6m cuc vi6n c6ch m{t 50cm
(al Ngudi nAy bi t$t gi ?
bt
Ug"oi
tI6 mu6nihin
doq" cdc v0t & r6t xa md khdng cAn cidu ti6t mi ph6i rfeo s4tmit
klnh co dO tu bao nhi6u ?
Cf,u
l0 :
V0t AB nlm song songvdcich
m$t man anh (M ) m$t doan 54 cm Ngu&i tad{t
khoAng Brqa vfltvi
man mOt th6uFi+
( Truc chinh cua thAu kinh di qua Aia
vuong'goc vol men) Qua th6u kinh thu dugc anh a/e/ hiQn 16 tr6n mdn vd cao&pz
6n
v6t X6c CinIrIoaithAu kinh , ti6u cg cua ttr,6u k{nh , khofuig c6ch tu vflt tt6n th6u
kinh-{
-+
B
0
l1
I