TERBAR
日四初月二十年未丁屉夏
1958
式題額習書酒
何玉柱。
名三月一年八六九一愿公年七十五国民津中
日
WAH KIU YAT PO
倫敦大學教授
< $£4 (1D) DEE-PEERE- 八號與東倫敦大學發控黑斯爵士及夫
明對香港物理學會會員演
EGHEINEKEELES DE RENE
美斯爵士訪港精
{ZENAK.
易购
之 飲茶否质
爲香港物學會會簣及其親友主日期,現代術 搵之意義去。散後,
·月講室必行。
[EPPKASTUK• ·
【大學化图穿行,地鼬爲本月五日下午五
「聆聽者,可與財會秘書勞無染,地址
第二次黄脚向一項國演繕,在香港
£4·6)
港
講堂於育一在交
THE VAU 149
E
英
搧性現輯 特洋化名
· 夏理臣飛加拿大 【港大歷史系教授次,他會錯,
出任哥倫比亞大學新職
【升本科,預定两年後返點。昨在供送行
僭島班航班接拍港府受训。余䒷道小姐
|ACKIMIK - KIRAALSE
「余寶瑜夫人之女子的质吃小姐,於時的 (EN) BEKKKKEMBER
余思恆小姐
飛巴黎深造
5.十五年,任女學院院長帶狀,集亦儒 於本内就任新職(祝) 【巫食創辦人及曾任會長。斯英屬哥倫比 良家史學會香港分會委員,馬渋史
EK BEGFRFERSKEREE 史學教授。貝氏任職港大餐史系激擔凡
一,於昨日下午二時,籴加航疪由飛行
(25) MEKARZESHER
RUBKRS • C
遠東中英文中學,爲準,引起學生對
遠東中 元旦團拜
林建同講復興文化
·勉各生發揚中國新藝術.
去質化
傳
英文科
(+)
Answers to Exercise TX:
As Ah Lee's sister is less stupid than
Ah Lee she does things less. slowly than
he (does).--Of course you may also use
result clauses Ah Lee is r
more stupid than his sister so that he does everything more. slowly than his sister (does).
He lives somewhere where the weather is
ao cold in winter that nobody works in win- ter at all.
He is very disappointed with himself be cause the more he tries to be good, the wor- se he seems to be
That he had wronged her was the thought: which annoyed him day and night.
whether he can succeed.
He often asks himself how he can be RE
Exercise X
Read the following passage carefully then answer the questions set on it. Use your
cwn words if possible 1
1768
[founder of Christianity. Christmas is the most
Important holiday of the Western calendar
Celebrating the birth of Jesus Christy the
英文中學會考試題預習專欄
物理科 (+)
·陸永熾·
Physics (10)
Christianity has been a vital force in the de- velopment of Western civilization and has in- spired some of the world's greatest art, arch- itecture music and literature The calendar itself counts time from the birth of Christ.
Christmas is a time for remembering the J (fortunate. Churches and many other organiza- tions collect special offerings of boney, toys clothing and food to give to those who are in need.
*
Christmas, which commemorates the birth of the Christ Child, is particularly a day for children. Parents, relatives and friends! take care in selecting or making gifts that will bring the most pleasure to the children in their livest Business and professional or ganizations and church groups give Christmas parties for underprivileged children and pro- vide them with gifts.
Many adults also exchange gifts and millions more send Christmas cards wishing friends of all faiths around the world greetings of the season Frequently non-Christians, too, send Christians greetings as a token of good will and friendship.
"Merry Christmas" is the greeting on every tongue and the wish in every heart for all mankind on this most joyful of holidaye.
1) What does Christmas celebrates
20 When Christmas comes many people take
this opportunity to remember the less for tunate people.. What do they do?
13)
What is the purpose of giving children presents?
4) Do people only send Christmas cards.
Christians?
What does everybody say and wish to all) "people on Christmas day?
6) Why do some non-Christians also send
Christmas cards?
2) Why is Christmas the most important ho-
liday of the Western calendar?,
2. Translate the following passage into Chin-
e80:
At the turn of the century, a disillusioned man who had failed at almost everything he had attempted wrote to his sister: "When I was young I Longed to write a great novel that should win me fame. Now that I am getting old my first book is written to amuse childe ren.
For, aside from my evident inability to do anything 'great', I have learned to regard fame as a will-o-the-wisp. but to please
a child is a sweet and lovely thing that warms one's heart."
The man was Lyman Frank Baum, and his best- known book began to take form when a group of children, led by his own four boys, waylaid,
him one evening in his modest home demanding a story. Sitting down with the children surrounding him, he began to talk.
He gave no thought to what he was saying and later wrote in amazement, "The characters surprised even me--it was as though they were living
peonie?
Note: turn of the century-turn from 19th
century to 20th century disillusioned--awakened to reality will-o-the-wisp--anything deceptive, unreal
laid--surrounded`
characters--people in a story
Lyman Frank Baum--the author of a favorite
series of Oz books, á Vy
Translate the following passage into
Englisht,
17, Solution
(a) (1) Useful application of solid expansion
The tight fit metallic tyre on the wheel of a locomotive is enabled by expansion.
The difference of expansion of bi-metallic strip 18 a very weful application in electrio thermosta
(15) Useful application of liquid expansi0H
The uniform expansion of mercury is made used in a thermometer to indicate temperature change.
Pendulum clock, if not compensated, will lose time during warm days and gain, in cold weather This is due to the change in length of the metallic rod which serves as a pendulum length. To compensate for this, a set of brass and iron rods is arranged so that the differential- expansion of them will compensate each other. The pendulum length is therefore, kept constant.
(b) (1)
(11)
Fixed point)
xed toim).
100
32°F (The lower fixed point) 212°F (The upper fixed point)
20 212
32
(111) Let the 80°C mark be x
above A
KONG
可治纯属快?又是到了一蠻之米。一九六八對我們是非常不要的一年。在這一年我們中有些 記學校踏入肚會;有些爾能領升學,我們會分開各奔前程。
如此重辣,我們就赚带用過一年的時間,在各方面力次進一在李端方面,我們要 實際上。在身體方面,我們李理規律生活,使身心張備。在屬體方面,我們讓黩後
鄭壓向,有難處互相安麼招助,以證朋友之豐
快樂•成功的新的一帶
100°C mark is 20 cm. above A.
-(b)
Load
Effort
The velocity ratio of a pully system is measured by observing the distance (S). The load (W) moves when the free end of the string, where the effort (P) is applied, is moved down a distance (r). Thus
The mechanical advantage of
a pully system can be measured' by attaching the end of the rope, where the effort is applied, to a scale pan. They pan is loaded until the walcht (W) is just raisea..
LIESE
PALIC LIBRA
It is 16 cm. above. A.
(1v) Let the 144°F by y cm. abova A (32°F) and
212 merk is 20 cm. above
This
20
212-32
12
*144°F mark is 12
ch, above A.
(c) The flask with a tube inverted
as in figura serves as a gás, thermometer,
When temperature rises, the water level in the tube descends. When temperatura drop, the air contracts and water rises in the tube.
An air thermometer, thum mane, has a very serious fault, Its readings are affected by changes in atmospheric pressure
- well as by temperature.
18. (a) Velocity Ratio (or speed ratio)
The ratio of the distance moved by the effort to the distance moved by the load in the same time is called the velocity ratio of the machine.
distange moved by effort
di-canca moved by load in the same time,
Mechanical advantage
The mechanical advantage of machine is
dorined as the ratio of the load to the effort.
load (W)
W
tal weights in the pant, of pan.
From the arrangement of tha pulley system we know V.R. 1s
load- Effort
MA
Efficiency
M.AT
V.R.
* 100%
* 100%
By the Principle of work Work done by effort
溝
work obtained from the machine
✦ work overcome friction
• work done in raising. lower block.
If the load is raised for 1 unit length
60 x 5. * 200 x 1+ work overcome friction
50 x 1 Work overcome friction - 300
50
200 - 50
In the absence of friction, effort required will be less than 60 lb.wt. it will be:
Px 5200 x 1 + 50 1 1
P-50
M.A
Efficiency
x 100%
V.R.
2005
80%
Questions for next week
19. Define the coefficient of Linear expansion. Give a detailed account of an experiment to -determine the coefficient of linear expansion of
a metallic rod.
A square metal plate, each side 10 cm. Long at 0°C, has a circular hole of diameter 40 cm. In the middle of it. At what temperatura will the diameter be 40.4 cm., and what will then be tho. sides of the plate? (Coef. of linear expansión. metal - 0,0000125/deg.CJ).
Explain the term real and apparent as applied liquid expansion.
Describe, with the aid of diagrams, an experie
to determine the coefficient of apparent expansion of turpentine, showing how you would calculate your result.
A glass flask and tube of total capacity i litre are filled with oil at 20°C. The temperature is then lowered to 15°C. If the cross-section of the tube is 1
sq.cm, find the change in level of the oil in the tube. (coef. of linear expn. of glas - 0,000008/deg.C, coef. of real exm. of oil - 0.0005LL/dag.C.)