rpt fizik 2012 smktpi

8/10/2019 Rpt Fizik 2012 Smktpi

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SMK TAMAN PELANGI INDAH

YEARLY PLAN 2012/PHYSICS FORM4

LEARNING AREA: CHAPTER 1 INTRODUCTION TO PHYSICS

Week Lear!"

O#$e%&!'e

Lear!" O(&%)*e+ S(""e+&e, A%&!'!&!e+ N)&e+ -)%a#(.ar

1

4/1/12-

6/1/12

Or!e&a&!) Week 4/1/12 /1/123

ACTI-ITIES AS SCHEDULED IN ORIENTATION WEEK3

2

9/1/12

-

13/1/12

1.1

Understanding

Physics

A student is able to:

exlain !hat hysics

is

recogni"e the hysics in

e#eryday ob$ects and natural

heno%ena

&bser#e e#eryday ob$ects such as

table' a encil' a %irror etc and discuss

ho! they are related to hysics

concets.

(ie! a #ideo on natural heno%enaand discuss ho! they relate to hysics

concets.

)iscuss *ields o* study in hysics suchas *orces' %otion' heat' light etc.

3

16.1.12

-

2+.1.12

1.2

Understanding

base ,uantities

and deri#ed

,uantities


exlain !hat base

,uantities and deri#ed

,uantities are

list base ,uantities and

their units

list so%e deri#ed,uantities and their units.

exress ,uantities using

re*ixes.

)iscuss base ,uantities and deri#ed

,uantities.

ro% a text assage' identi*y hysical

,uantities then classi*y the% into base

,uantities and deri#ed ,uantities.

ist the #alue o* re*ixes and their

abbre#iations *ro% nano to giga' eg.nano 1+-90' n%nano%eter0

)iscuss the use o* scienti*ic notation

to exress large and s%all nu%bers.

ase ,uantities are:

length l0' %ass%0'

ti%e t0' te%erature

0 and current 0

uggested deri#ed

,uantities: *orce 0

)ensity 0 '

#olu%e (0 and#elocity #05ore co%lex

deri#ed ,uantities

%ay be discussed

ase ,uantities-

uantiti asas

)eri#ed ,uantities 7

uantiti terbitan

ength- an$ang

5ass 7 $isi%

e%erature 7 suhu

8urrent 7 arus

orce 7 daya)ensity 7 etu%atan(olu%e 7 isiadu

(elocity - hala$u

1 hel%i 12


2/26

;xress ,uantities using

scienti*ic notation

Week Lear!"

O#$e%&!'e


exress deri#ed ,uantities

as !ell as their units in

ter%s o* base ,uantities andbase units.

sol#e roble%s in#ol#ing

con#ersion o* units

)eter%ine the base ,uantities and

units0 in a gi#en deri#ed ,uantity and

unit0 *ro% the related *or%ula.

ol#e roble%s that in#ol#e the

con#ersion o* units.

8=?;; ?;< >;A@ 23/1/2+12 7 29/1/2+120

3+/1/12-

3/2/12

1.3

Understandingscalar and #ector

,uantities


de*ine scalar and #ector

,uantities

gi#e exa%les o* scalar

and #ector ,uantities.

8arry out acti#ities to sho! that so%e

,uantities can be de*ined by %agnitudeonly !hereas other ,uantities need to

be de*ined by %agnitude as !ell asdirection.

8o%ile a list o* scalar and #ector

,uantities.

6

B/2/12-

11/2/12

1.4

Understanding%easure%ent

A student is able to

5easure hysical

,uantities using aroriate

instru%ents

;xlain accuracy andconsistency

;xlain sensiti#ity

8hoose the aroriate instru%ent *or agi#en %easure%ent

)iscuss consistency and accuracy

using the distribution o* gunshots on atarget as an exa%le

)iscuss the sensiti#ity o* #arious

instru%ents

Accuracy- e$ituan

8onsistency- eersisanensiti#ity-eeaan

;rror- ralat

@ando% - ra!a

2 hel%i 12


3/26

Week Lear!"

O#$e%&!'e


;xlain tyes o*

exeri%ental error

Use aroriate techni,ues to

reduce errors

)e%onstrate through exa%les

syste%atic errors and rando% errors.

)iscuss !hat syste%atic and rando%errors are.

Use aroriate techni,ues to reduce

error in %easure%ents such as

reeating %easure%ents to *ind the

a#erage and co%ensating *or "ero

error.

C13/2/12

-

1C/2/12

1.Analysing

scienti*ic

in#estigations


denti*y #ariables in a

gi#en situation

denti*y a ,uestion

suitable *or scienti*ic

in#estigation

or% a hyothesis

)esign and carry out a

si%le exeri%ent to testthe hyothesis

@ecord and resent

data in a suitable *or%

nterret data to dra!

a conclusion


4/26

LEARNING AREA: CHAPTER 2 FORCES AND MOTION

Week Lear!"

O#$e%&!'e


B

2+/2/12-

24/2/12

2.1

Analysing linear%otion


)e*ine distance anddislace%ent

)e*ine seed and

#elocity and state that

t

sv =

)e*ine acceleration

and deceleration and state

thatt

uva

=

8alculate seed and#elocity

8alculate

acceleration/deceleration

ol#e roble%s on linear

%otion !ith uni*or%

acceleration using

atuv +=

2

2

1atuts +=

asuv 222 +=

8arry out acti#ities to gain an idea o*:

a0 distance and dislace%entb0 seed and #elocity

c0 acceleration and deceleration

8arry out acti#ities using a data

logger/grahing calculator/ticer ti%er

to

a0 identi*y !hen a body is at rest'%o#ing !ith uni*or% #elocity ornon-uni*or% #elocity

b0 deter%ine dislace%ent' #elocity and

acceleration

ol#e roble%s using the *ollo!ing

e,uations o* %otion:

atuv +=

2

2

1atuts +=

asuv 222 +=

A#erage seed D total

distance / ti%e taen

)istance 7 $ara

)islace%ent 7sesaran

eed 7 la$u

(elocity 7 hala$u

Acceleration 7

ecutan

)eceleration'

retardation 7

nyahecutan

4 hel%i 12


5/26

Week Lear!"

O#$e%&!'e


9 ; 1 2C/2/12 - 3/3/120

1+

/3/12

-

9/3/12

2.2

Analysing

%otion grahs


lot and interret

dislace%ent- ti%e and

#elocity-ti%e grahs

deduce *ro% the shae o*

a dislace%ent-ti%e grah

!hen a body is:

i. at rest

ii. %o#ing !ith uni*or%

#elocity

iii. %o#ing !ith non-

uni*or% #elocity

deter%ine distance'

dislace%ent and #elocity

*ro% a dislace%ent 7ti%e

grah

deduce *ro% the shae o*

#elocity- ti%e grah !hen a

body is:

a. at rest

b. %o#ing !ith uni*or%#elocity

c. %o#ing !ith uni*or%

acceleration

deter%ine distance'

dislace%ent #elocity and

acceleration *ro% a

8arry out acti#ities using a data

logger/grahing calculator/ ticer ti%er

to lot

a0 dislace%ent-ti%e grahs

b0 #elocity-ti%e grahs

)escribe and interret:

a0 dislace%ent-ti%e grahs

b0 #elocity-ti%e grahs

)eter%ine distance' dislace%ent

#elocity and acceleration *ro% a

dislace%ent 7ti%e and #elocity7ti%e

grahs.

@e%inder

(elocity is

deter%ined *ro% the

gradient o*

dislace%ent 7ti%egrah.

Acceleration is

deter%ined *ro% the

gradient o*

#elocity 7ti%e grah

)istance is

deter%ined *ro% the

area under a #elocity

7 ti%e grah.

hel%i 12


6/26

#elocity7ti%e grah

sol#e roble%s on linear

%otion !ith uni*or%

acceleration.

ol#e roble%s on linear %otion !ith

uni*or% acceleration in#ol#ing grahs.

Week Lear!"

O#$e%&!'e


5) ;@5 @;AE 1

1+/3/12 7 1B/3/12

11

19/3/12

-

23/3/12

2.3

Understanding

nertia.


exlain !hat inertia is

relate %ass to inertia

gi#e exa%les o*

situations in#ol#ing inertia

suggest !ays to reduce

the negati#e side e**ects o*

inertia.

8arry out acti#ities/#ie! co%uter

si%ulations/ situations to gain an idea

on inertia.

8arry out acti#ities to *ind out the

relationshi bet!een inertia and %ass.

@esearch and reort ona0 the ositi#e e**ects o* inertia

b0 !ays to reduce the negati#e e**ects

o* inertia.

?e!tonFs irst a!

o* 5otion %aybe

introduced here.

nertia - inersia

12

26/3/12

-

3+/3/12

2.4

Analysing

%o%entu%


de*ine the %o%entu% o*

an ob$ect

de*ine %o%entu%( )p as

the roduct o* %ass %0 and

#elocity #0 i.e. mvp =

state the rincile o*

conser#ation o* %o%entu%

8arry out acti#ities/#ie! co%uter

si%ulations to gain an idea o*

%o%entu% by co%aring the e**ect o*stoing t!o ob$ects:

a0 o* the sa%e %ass %o#ing at

di**erent seeds

b0 o* di**erent %asses %o#ing at the

sa%e seeds

)iscuss %o%entu% as the roduct o*

@e%inder

5o%entu% as a

#ector ,uantityneeds to be

e%hasi"ed in

roble% sol#ing

5o%entu% 7

%o%entu%

8ollision 7elanggaran

;xlosion 7 letuan

8onser#ation o* linear

%o%entu%-

eabadian %o%entu%

6 hel%i 12


7/26

%ass and #elocity.

Week Lear!"

O#$e%&!'e

Lear!" )(&%)*e+ S(""e+&e, A%&!'!&!e+ N)&e+ -)%a#(.ar

describe alications o*



%o%entu%

(ie! co%uter si%ulations on collisionand exlosions to gain an idea on the


8onduct an exeri%ent to sho! that the

total %o%entu% o* a closed syste% is a

constant

8arry out acti#ities that de%onstrate

the conser#ation o* %o%entu% e.g.

!ater rocets.

@esearch and reort on the alications

o* conser#ation o* %o%entu% such as

in rocets or $et engines.

ol#e roble%s in#ol#ing linear

%o%entu%

Week Lear!"

O#$e%&!'e


13

2/4/12

-

6/4/12

2.

Understanding

the e**ects o* a

*orce


describe the e**ects o*

balanced *orces acting on an

ob$ect

describe the e**ects o*

unbalanced *orces acting on


8/26


9/26

1

16/4/12-

2+/4/12

2.C

eing a!are o*the need *or

sa*ety *eatures in

#ehicles

describe situation !here

an i%ulsi#e *orce isbene*icial

ol#e roble%s

in#ol#ing

i%ulsi#e *orce


describe the i%ortance o*

sa*ety *eatures in #ehicles

@esearch and reort on the hysics o*#ehicle collision and sa*ety *eatures in

#ehicles in ter%s o* hysics concets.

)iscuss the i%ortance o* sa*ety

*eatures in #ehicles.

16

23/4/12

-

2/4/12

5) >;A@ ;GA5

1C

3+/4/12 7

4//12

1//12 D

A&U@

)A>0

2.B

Understanding

gra#ity


exlain acceleration due to

gra#ity

state !hat a gra#itational

*ield is

de*ine gra#itational *ield

strength

8arry out acti#ity or #ie! co%uter

si%ulations to gain an idea o*

acceleration due to gra#ity.

)iscuss

a0 acceleration due to gra#ity

b0 a gra#itational *ield as a region

in !hich an ob$ect exeriences a

*orce due to gra#itational attraction

and

c0 gra#itational *ield strength g0

as gra#itational *orce er unit %ass

8arry out an acti#ity to deter%ine the

#alue o* acceleration due to gra#ity.


10/26

Week Lear!"

O#$e%&!'e


deter%ine the #alue o*

acceleration due to gra#ity

de*ine !eight


11/26

e**iciency. the alied *orce i.e. < Ds. b0 an ob$ect undergoes a dislace%ent

Week Lear!"

O#$e%&!'e


tate that !hen !or is

done energy is trans*erred

*ro% one ob$ect to another.

)e*ine inetic energy and

state that2

k mv2

1E =

)e*ine gra#itational

otential energy and state

that ; D %gh

tate the rincile o*

conser#ation o* energy.

)e*ine o!er and state

that

P D


12/26

energy' o!er and e**iciency.

Week Lear!" O#$e%&!'e Lear!" O(&%)*e+ S(""e+&e, A%&!'!&!e+ N)&e+ -)%a#(.ar

ol#e roble%s in#ol#ing

!or' energy' o!er and

12 hel%i 12


13/26

2+

21//12

-

2//12

2.11

Areciating the

i%ortance o*

%axi%ising the

e**iciency o* de#ices.

e**iciency


recogni"e the i%ortance o*

%axi%ising e**iciency o*

de#ices in conser#ing

resources.

)iscuss that !hen an energy

trans*or%ation taes lace' not all the

energy is used to do use*ul !or.

o%e is con#erted into heat or other

tyes o* energy. 5axi%i"ing

e**iciency during energytrans*or%ations %aes the best use o*

the a#ailable energy. his hels to

conser#e resources

5) >;A@ @;AE

21

11/6/12

-

1/6/12

2.12

Understanding

elasticity.

;xeri%ent 2.4

P;EA0


de*ine elasticity

de*ine =ooeFs a!

de*ine elastic otential

energy and state that

2p kx

2

1E =

8arry out acti#ities to gain an idea on

elasticity.

Plan and conduct an exeri%ent to*ind the relationshi bet!een *orce

and extension o* a sring.

@elate !or done to elastic otential

energy to obtain2

p kx2

1E = .

)escribe and interret *orce-

extension grahs.

.

Week Lear!" O#$e%&!'e Lear!" O(&%)*e+ S(""e+&e, A%&!'!&!e+ N)&e+ -)%a#(.ar

deter%ine the *actors that

a**ect elasticity

n#estigate the *actors that a**ects

elasticity.

13 hel%i 12


14/26


15/26


16/26

2/C/12

-

6/C/12

Understanding gas

ressure and

at%osheric ressure


ressure in li,uids.


ressure in li,uids.

A student is able to: exlain gas ressure

exlain at%osheric

ressure


at%osheric ressure


at%osheric ressure and gas

ressure

@esearch and reort on

a0 the alications o* ressure in

li,uids

b0 !ays to reduce the negati#e e**ect

o* ressure in li,uis

ol#e roble%s in#ol#ing ressure in

li,uids

8arry out acti#ities to gain an idea o*gas ressure and at%osheric

)iscuss gas ressure in ter%s o* the

beha#iour o* gas %olecules based onthe inetic theory

)iscuss at%osheric ressure in ter%s

o* the !eight o* the at%oshere acting

on the ;arthFs sur*ace

)iscuss the e**ect o* altitude on the%agnitude o* at%osheric ressure

@esearch and reort on the

alication o* at%osheric ressure


at%osheric and gas ressure

including baro%eter and %ano%eter

readings.

tudent need to

be introduced to

instru%ents used

to %easure gas

ressure

ourdon Hauge0

and at%osheric

ressure ortinbaro%eter'

aneroid

baro%eter0.


17/26

2'26

9/C/12

-

2+/C/12

3.4

Alying PascalFs

rincile


state PascalFs rincile.

;xlain hydraulic syste%

)escribe alications o*

PascalFs rincile.


PascalFs rincile.

&bser#e situations to *or% the idea that

ressure exerted on an enclosed li,uid

is trans%itted e,ually to e#ery art o*

the li,uid

)iscuss hydraulic syste%s as a *orce

%ultilier to obtain:

&utut *orce D outut iston areanut *orce inut iston area

@esearch and reort on the alication

o* PascalFs rincile hydraulicsyste%s0

ol#e roble%s in#ol#ing PascalFs

rincile

=a#e students

recall the

di**erent *or%s

o* energy.

;nclosed- tertutu

orce %ultilier-

e%besar daya

=ydraulic syste%s

7 syste%

haudrauli

rans%itted 7

tersebar

2'26

9/C/12

-

2+/C/12

3.

Alying

Archi%edesF

rincile.


;xlain buoyant *orce

@elate buoyant *orce to the

!eight o* the li,uid dislaced

tate Archi%edesF rincile.

)escribe alications

Archi%edes rincile


Archi%edes rincile

8arry out an acti#ity to %easure the

!eight o* an ob$ect in air and the

!eight o* the sa%e ob$ect in !ater to

gain an idea on buoyant *orce.

8onduct an exeri%ent to in#estigate

the relationshi bet!een the !eight o*

!ater dislaced and the buoyant *orce.

)iscuss buoyancy in ter%s o*:

a0 An ob$ect that is totally or

artially sub%erged in a *luid

exeriences a buoyant *orce e,ual tothe !eight o* *luid dislaced

b0 he !eight o* a *reely *loating

ob$ect being e,ual to the !eight o*

*luid dislaced

1C hel%i 12


18/26

Week Lear!"

O#$e%&!'e


c0 a *loating ob$ect has a density less

than or e,ual to the density o* the

*luid in !hich it is *loating.

@esearch and reort on the

alications o* Archi%edesF rincile'e.g. sub%arines' hydro%eters' hot air

balloons


Archi%edesF rincile.

uild a 8artesian di#er. )iscuss !hy

the di#er can be %ade to %o#e u and

do!n.

2'26

9/C/12

-2+/C/12

3.6

Understanding

ernoulliFsrincile.


tate ernoulliFs rincile

;xlain that resultant *orce

exists due to a di**erence in

*luid ressure


ernoulliFs rincile


ernoulliFs rincile

-8arry out acti#ities to gain the idea

that !hen the seed o* a *lo!ing *luid

increases its ressure decreases' e.g.blo!ing abo#e a stri o* aer'

blo!ing through stra!' bet!een t!o

ingong balls susended on strings.

-)iscuss ernoulliFs rincile

8arry out acti#ities to sho! that a

resultant *orce exists due to a

di**erence in *luid ressure.

-(ie! a co%uter si%ulation to

obser#e air *lo! o#er an aro*oil togain an idea on li*ting *orce.

@esearch and reort on thealications o* ernoulliFs rincile.

-ol#e roble%s in#ol#ing ernoulliFs

rincile.

LEARNING AREA: CHAPTER 4 HEAT

Week Lear!" Lear!" O(&%)*e+ S(""e+&e, A%&!'!&!e+ N)&e+ -)%a#(.ar

1B hel%i 12


19/26

O#$e%&!'e

2B

3+/C/12

-

3/B/12

296/B/12

-

1+/B/12

4.1

Understanding

ther%al

e,uilibriu%.

4.2Understanding

seci*ic heat

caacity


;xlain ther%al e,uilibriu%

;xlain ho! a li,uid in

glass ther%o%eter !ors


)e*ine seci*ic heat

caacity

c0

tate thatmc

Qc =

)eter%ine the seci*ic heat

caacity o* a li,uid.

)eter%ine the seci*ic heat

caacity o* a solid


seci*ic heat caacity


seci*ic heat caacity.

8arry out acti#ities to sho! that

ther%al e,uilibriu% is a condition in

!hich there is no net heat *lo!

bet!een t!o ob$ects in ther%al

contact

Use the li,uid-in-glass ther%o%eterto exlain ho! the #olu%e o* a *ixed

%ass o* li,uid %ay be used to de*ine a

te%erature scale.

&bser#e th change in te%erature

!hen:

a0 the sa%e a%ount o* heat is used to

heat di**erent %asses o* !ater.

b0 the sa%e a%ount o* heat is used to

heat the sa%e %ass o* di**erent

li,uids.

)iscuss seci*ic heat caacity

Plan and carry out an acti#ity to

deter%ine the seci*ic heat caacity

o*

a0 a li,uid b0 a solid

@esearch and reort on alications

o* seci*ic heat caacity.

ol#e roble%s in#ol#ing seci*ic

heat caacity.

=eat caacity

only relates to a

articular ob$ect

!hereas seci*ic

heat caacity

relates to a

%aterial

Huide students to

analyse the unit

o* c as11KJkg or1o1 CJkg

ther%al

e,uilibriu% 7

esei%bangan

ter%a

seci*ic heat

caacity 7 %uatan

haba tentu

19 hel%i 12


20/26

Week Lear!"

O#$e%&!'e


3+

13/B/12

-

1C/B/12

4.3 Understanding

seci*ic latent heat


tate that trans*er o*

heat during a change o* hase

does not cause a change in

te%erature

)e*ine seci*ic latent heat

( )l

tate thatm

Ql =

)eter%ine the seci*ic

latent heat o* a *usion.

)eter%ine the seci*ic

latent heat o* #aori"ation


seci*ic latent heat

8arry out an acti#ity to sho! that

there is no change in te%erature

!hen heat is sulied to:

a0 a li,uid at its boiling oint.

b0 a solid at its %elting oint.


21/26

Week Lear!"

O#$e%&!'e


31

2C/B/12

-

3+/B/12

4.4

Understanding the

gas la!s


exlain gas ressure'

te%erature and #olu%e in

ter%s o* gas %olecules.

)eter%ine the relationshi

bet!een ressure and #olu%e

at constant te%erature *or a

*ixed %ass o* gas'

i.e. ( D constant


bet!een #olu%e andte%erature at constantressure *or a *ixed %ass o*

gas' i.e. (/ D constant


bet!een ressure and

te%erature at constant #olu%e

*or a *ixed %ass o* gas' i.e. /

D constant

;xlain absolute "ero ;xlain the absolute/Eel#in

scale o* te%erature


ressure' te%erature and

#olu%e o* a *ixed %ass o* gas

Use a %odel or #ie! co%uter

si%ulations on the beha#iour o*

%olecules o* a *ixed %ass o* gas to

gain an idea about gas ressure'

te%erature and #olu%e. )iscuss gasressure' #olu%e and te%erature in

ter%s o* the beha#iour o* %olecules

based on the inetic theory.

Plan and carry out an exeri%ent on a

*ixed %ass o* gas to deter%ine the

relationshi bet!een:

a0 ressure and #olu%e at

constant te%erature

b0 #olu%e and te%erature at

constant ressurec0 ressure and te%erature at

constant #olu%e

;xtraolate P- and (- grahs or

#ie! co%uter si%ulations to sho!

that !hen ressure and #olu%e are

"ero the te%erature on a P- and (-

grah is 7 2C3+8.

)iscuss absolute "ero and the Eel#in

scale o* te%erature

ol#e roble%s in#ol#ing the ressure'te%erature and #olu%e o* a *ixed

%ass o* gas.

21 hel%i 12


22/26


23/26

Week Lear!"

O#$e%&!'e


33

1+/9/12

-

14/9/12

.2

Understanding

re*raction o* light.


;xlain re*raction o* light

)e*ine re*racti#e index as

sinr

sini =

)eter%ine the re*racti#e

index o* a glass or Persex

bloc

tate the re*racti#e index'' as

eed o* light in a #acuu%

eed o* light in a %ediu%

)escribe heno%ena due to

re*raction


re*raction o* light

&bser#e situations to gain an idea o*

re*raction

8onduct an exeri%ent to *ind the

relationshi bet!een the angle o*incidence and angle o* re*raction to

obtain nellFs la!.

8arry out an acti#ity to deter%ine the

re*racti#e index o* a glass or ersex

bloc

)iscuss the re*racti#e index' ' as

eed o* light in a #acuu%

eed o* light in a %ediu%

@esearch and reort on heno%enadue to re*raction' e.g. aarent deth'

the t!inling o* stars.

8arry out acti#ities to gain an idea o*

aarent deth.


24/26


25/26

Week Lear!"

O#$e%&!'e


3

24/9/12-

2B/9/12

36

1/1+/12

-

/1+/12

.4

Understandinglenses.


;xlain *ocal oint and *ocal

length

deter%ine the *ocal oint

and *ocal length o* a con#ex

lens

deter%ine the *ocal oint and

*ocal length o* a conca#e lens

)ra! ray diagra%s to sho!

the ositions and

characteristics o* the i%ages

*or%ed by a con#ex lens.

)ra! ray diagra%s to sho!

the ositions and

characteristics o* the i%ages

*or%ed by a conca#e lens.

)e*ine %agni*ication as

u

vm =

@elate *ocal length *0 to the

ob$ect distance u0 and i%age

distance #0

i.e.v1

u1

f1 +=

)escribe' !ith the aid o* ray

diagra%s' the use o* lenses in

otical de#ices.

8onstruct an otical de#ice

Use an otical it to obser#e and%easure light rays tra#eling through

con#ex and conca#e lenses to gain an

idea o* *ocal oint and *ocal length.

)eter%ine the *ocal oint and *ocal

length o* con#ex and conca#e lenses.


26/26

that uses lenses.

ol#e roble%s in#ol#ing to

lenses.

lenses.

ol#e roble%s in#ol#ing to lenses

Week Lear!"

O#$e%&!'e


3C

B/1+/12

-

12/1+/12

FINAL E6AMINATION

26 hel%i 12

rpt fizik 2012 smktpi

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