1977-05-18 — Page 23

自播育教 真三第張六第 日一初月四年巳丁腐复

WAH KIU YAT PO

As shown in the

force diagram..

1977中學會考試題預習專欄

明德社主編

【物理科建議答案(部份)

魯榮家

PHYSICS (27)

Suggested Answera for

PHYSICST HK.C.EE. 1977

SECTION A Mechanics, and

Properties of mutter

(1) Let H = reaction of the

sest on the man

- weight of the man

a acceleration of the man

during the period.

1.- mass of the ELI

500

100

+50

Time in seconds (a) The acceleration of the

wpaceship can be obtained by finding the slope of the velocity time curve given, (1) Slope of UA

1000

500

2

20. mn

(Ana)

(11) Slope of AÐ

-1000

10 ma

50

(Ana.) =

The negative sign indicatem thit the spaceship is retard-

ing during this period.)

Et # # 14

·R - V - ùa, or RW+四高

w the weight

of the man during the

period.

(1) W = =g

- 100kg. x 10'xs 酷我::100kg x 20ma:

- 2000 N

1000 N

HONG KONG CERTIFICATE OF EDUCATION EXAMINATION 1977

經濟及公業事務

試進一

24% (92%E

IN AND MET HA

R 1000 N + 2000N

- 3000 N (Aus.) -10 ma

(11) Hence

2

R = 1000N + 100 x (-10)N

1000N 1000N

(Ans.) -0. N

(c) The total distance travell

ed in the first 150 seconds

the maximum height reached

by the apaceship

the total area under the

velocity - time curve

area of ▲ OAC + Brea of

金x 50 x 1000 mAAHC

dx100 x 1000m

- 75000 m. (Ans.)

2. (a) The constant, irregular motion of a smoke particle is due to the ( Brownian motion) movement of air molecules. The particle is no small that the number of molecules of air hitting one side is not balan- ced by an equal number of molecules hitting the opposite side at the same instant. Con-

particle moves

Bequently, th

ECONOMIC & PUBLIC AFFAIRS

PAPER.E

One bout and thirty minutes

4.30 -10.00 am.

in the direction of the re-

This paper must be answered in Chinese

(-6)

14

郭日僑華

sultant force, When it moves to another place the mamething.

happens.

(i)

The constant and irregular motion of the smoke Parti- cles shows that air is made of small Particles (molecules), they move constantly in all differ- ent directions and never. stoqp.

(ii) The Brownian movement gets faster if there is.

rise in temperature,

that the mir molecu) owing

faster ( obtain greater kinetic energy ) if they are

heated.

(b) (i)

The volume of oleic acid in 0.03 cm3 of the solution

0.03 cm

3

- 3. 10 em

Area ofthe patch of oleic

Manizal termed

100 Tem

300 em:

2

The approximate length of

an oleic acid molecule

the thickness of the patch

of oleic acid

volume of oleic acid

area of oleic acid

3 x 10-5

300 cm

1 x 10-7

(Ana.)____

三期星

日八十月五年七七九一公年六十六國民中

(ii) The assumptions are : 1, 0leic acid is completely.

dissolved in methanol and

the solution so formed in /

uniform.

2. The patch of oleic acid

formed in a mono-molecular

layer. 13. The oleic molecules occupy the volume of the whole:patch

4. Oleic acid does not "dis-

solved in water and does not

evaporate.

3. (a) The three types of equi- librium of a body under

gravity are

1, stable equilibriuIRE 2. neutral equilibrium

3. unstable equilibrina

(b) The factors are :

i. The height of the cen tre of gravity above the ground.

2. The width between the

wheels.

By:aymetry,

the c.g.

of the

leminä must lie on the line

Attempt THREE questkim, Anwar at least QBE question from each of Sections And B

SECTION A

(b) Fxplain the demand ewtkises, and theis Ignificance in the podiscern, at Ure Ellowing:

(3) Fal

FC, therefore, produce FC, BC is produced and meets PE at H, hence, the c.g. of the lemina:AHMF.is at by . which. is the centre (intersection of AM and BF) of the rectangle ABMF. Similarly, the cag. of CDEM in at wy (intersection of MD and CB). The c.. of the whole systen must lie on the line joining G and Giga

Therefore, the e.g. of the

whole uniform thin lamina is

at the point of intersection G of the lines FC and

(1) It is stable equilibrium for the c.g. of the thin uni- form lesina is below the peg (the point of support).

For a small displacement

of the lemine, the c.g. of

the lemina will rise (i.esta:

slight displacement produces an increase in potential ene ergy), the demina will fall back to its original position

if released, so that equili-

brium is stable,

To be continued

in which iwas respects do capital stocks-differ fromi debeatóru itçeks?

12 marks)..

(Q)

meat by clar demand, wrutary dastey of demand and pericitly inelastic demund ? Dusite with- graphs,

What are primary products? Go two examples.

() marka)

17 roka)

Dinguish between location pivcal example of the lattes.

Name's comenon detects of partnerships sa campurva Anita.

Tindistry" and "Tocalization of industry). Ģim

(3 macka)

other forms of business

(1) Explain the coming of "v" "proportional" and "sepressive? Laxation, Gave a lical

example of each

(6 muki)

(b) What would be the aconitas czéséquences in the Hong Kong Goergent were p

Name tice functions as the Trade Dovesojudent Conscil.

Give four postela events of a public enterprise.

(3 masks).

(4 m

supply cheap land to industry;

(7 muki).

9.

(1), nha tha Valachon kan INT

· List four conditioni necesary for the calence of part

“Jake Tour functions of a centesi back.

(k)

What benefa Hong Kong obtain by participating in foreign trade 1

What would be the economik-consequences the Hong Kong Government went to impone (b)

(10 muka)

(30 macha).

SECTION &

(4) Debe the functions of the unofficial members of the Legislation and Ex-Con

At present all the unofficial members of these two couses are appointed by the Governaż. What `ure the menti and demers of beving them appssisted tæther than elrowad

When codd be done by the

(10 maths)

Har three functions of mi wytroprement in a fam

Using the following dara (in 5 million), cumples the undements

(3 marka)

Vagi

Prota

Internat

缈

[b]

(c) RE

拉科)市民

(105))

(104)

HONG KONG CERTIFICATE OF EDUCATION EKAMINATION 1977

經濟

SAN FRAZE

ECONOMICS

Two hours and thirty minutes

翻

本相姦趄垒筏

猬陆下

回就装三

14

15

( 65 )

·(20)

17.

快处!”“俊之飄忌所襻:

(7.2)

8.30a.m.--11.00 m.,

This paper must be answered in Chinese

時

最活交

你分:

跟卅新在·告新 甜

2

(10) (10)

Government

kchool

(0) fely, and

citan

in the pitration of scrie in Bong Kong?

Comment on the coactness of the lodowing statemenu consernig the activas, of the Camerazion

Ham1

(maks)

kf

Depreciation

(4-Thanks)

(4. marks)

(b)

a The Governor email consult, and take the sorce of the Executiez Couted in að mallars.

Hong Kong does not have an independent Judepry became a judges are appointed, and can be removed, by the Governor.

(7 mache),

Disable Income

Net Loverstat

The Net No ProductLLL

Grop verti

Texon paltar the govenement mounta

Pepe sklom. No transport cost.

(7 moaika)

The forlog dalag

<j

All liwi ant coasted by the Covertor Dishes these awer in Hong Kon

(mark)

Yield Fur Linit

uit of Cost

END OF PAPER

Unit of Commodity &

The of Commodity Y

CONTITY A

Country a

Based on the above, complete the following:

(*)

(3)

Country B exports 12 unha of cartonađity X to Constry A, with he soon job, tuy wit of commodity Y. from Country A According to the Comparative Cons Theory; Country A should 'specialise in the production of cosmodity

(4 sarka)

九七七年,香港中

HONG KONG CERTIFICATE OF EDUCATION EXAMINATION 1977

ECONOMICS

Two hours and thirty minutes

RECTION

Államp: THREE-questions in away form

8.30 am-11.00 a.m..

This paper.zmust be answered in English.

Distinguant between a change in demand mid a chimage in qumary danauded, What are the factors ghat may bring about a change in darkand). What are the datatrisanin of Masticity of dansand? -

(L) packs)

(6 marka

15.

What are the base of monopoly power)

(5 marks)

What are the siguokata FOR MÍ AGAINST mowopoty?:

16

Though Hoog Kong is a place with practicaby wa natural venoisrome, she has been qpdates wuceweatd is bert Industrial development.way7

17.

你

Atheng1 both Sections A and B. Answer All queshoes in Section & and NOREE questions in Section R

Wut in the parpon of massing national income?

(? marks)

A t t $ 424 4 **

HONG KONG CERTIFICATE OF EDUCATION EXAMINATION 1977

經濟及公衆事務

ECONOMIC & PUBLIC AFFAIRS .PAPER·1

試卷一

{2}) }

EVANJA 1.4-1.

¥30 a.m.-10.00 am

One hour and thirty minutES.

This paper must be answered in English

All were must be written in the kaswer book. All mathematical working ayust be clearly shown,

SECTION A.

Attempt ALL querčkan

-shan do you undarmand by 'oponum population??

Duntiguah between defallen and depicemu CHE

天甜糖 早天开天

分

,下午提芑....

「藤桌粘吗」,「奥

六時「黃哲的旋律

八時,傳播BBC

,十五分.

_九時,醉人的葉

,愛曲夜說好。

卅分- 新聞簡報 - 天氣

天氣報告,甜心草長,

商業一台

七時,新聞簡報!

甜心亭族)。

八報,天氣預測:(

天氣報告,[圖纘甜心

新天

記問老天

老糊

報友氣

雜八放

時詔天

節曲

時驹逸導時天

告報船

分

新海報 老新 生幫

*迦澳、分賽告五, 目

『同賽門天,重狗七。 +

。時狗 逸氣 時及公時

代換司 分

曲狗公室.

·七事官邸朝七沾

八時五十分,88|铅中

九峰,京曲選唱。

茶香 養

狗十 精油 笹播

同分

妻門節粵邦 倪行

卅十狗逸民曲行

狗公士卅

卅您忠心

m

新的

AHO・+NJ

RO3 H计分卡機

四時,「芝蔴街

「無綫明珠台

無款

十興五例四

子林十二

二雙一片

、

“十時卅分,最新

10

八時,一片

↓,卅分,白羊、天

光時,「歡樂今安

樂-慶角聞

女

蒸尅厓J片集》

丑分,卡通片-十五分

佳藝電視 六碌-節目預製,

新開報導,廿五分,全

十二時收分,最稳

白點

學興新分

旭時廿二分,四日

九時一分,你以爲

管雅:卅分-設日標

罪

}

Distinguish between cral and money i

What are the probleme encountered le attempting to measure the Geom Mational Product of centsy

What sed the pomĺbie aconteak effects of:

(1) an increase in profite tang

(1), the provtakan of presions tad vnetngsleyinent boundīts.

· With exemples mcplain vertical and horizontal trængeston- What a tha zamota, for Immigration?”

-END OF EXPER

19.

香港一台

· 比说:被江花语,越交易所今日上午 人時間)。

*您

天生我才必有用,芬 十時,少品故事,俱吓間那

八四十五,一天地 股市行情,北分,含位

* 賽馬消息。

,節目真第二分相同。

二降,新聞情報,一時惕。

六時,新聞及「新 鍾空中俱樂部》,北

《招小故事

器

十分析七故

番語卅

「三藏的故事」+

市豐

: 七睁三分,古事新 。

香港二三台

報告球 嗨所午 香時俱新空降

今股巷,樂園

市濃所

愛

額」五十五分午間新聞

「無綫翡翠台

十二時,「行幹

一.五分,全會,

語。藏

」;大江南北。

四時,粵語長片:

三時,一萬二劇媽

六時,「校小棗

「及天淇報導。

七時,「觀點與角

十妻十,九天八

楼,輔民蝟

(ka)

(10 marks)

|

貴舞,出五分,

大世界大設實錄

一千分-光燐曲

,八時十分至十一15

反弹 五小鳥謎

六分 重卡期五 入 空手

精道罅分鐘

:感覺教分

五· 生奇 集辦理 十新活糰,兔