1967-04-06 — Page 17

頁一第張五第

7 APR 1967

CITY:"HAL

中文中學會考試題預習專欄,

物理科

(廿三)

#鄧炳恩。

四翔

日六月四年七六九一曆公年六十五國民中

座講程課外校學大文中

項兩講播續台港

「識常濟經代現』講權炳陳

[硏子老」講衡斗張

文大準校外

「法律常識

悟得]及

完竣,许本

月六市线,

陳長,分別

讚、張斗函。

及「老子出

經濟常」

士宝之「

| - 現爲中文大图聯合 唇 雷院經濟學高級製之解線及例文 比亚大學碩士,難|代經濟常第佔 士魯大學學士,在及例交,十八日; 拉大恩榮譽欢區博士獲知第七講「許同》 滅至於,二十日:

*陳炳根箨美國漫六課「道」 四「姓名里居問題」。「十三日,老子研究馆 期六時四十五分播出,了現代經發話讀第六 敎授主講的「老子研究」,涵展期六下午 八日第一「老子 翮經淩剛,

聖出,六日爲第一體「經西與經濟學」、張

「酸」螽星期四下午六時四十五分在該台播

,經濟系主任。

,

簿,鐧

七國

的

槪例

|點大學文學士,現一杯及列

| 斗密偈取购 联策,廿七日:患

醒

WAH KIU YAT FO

儲

中文大學聯合書院

|協同中學

日日本,關過案往意收公演話劇

【龍。四月六日~限

#附錄編定之節

干式凡~老子研究第 導演,開

講現代經濟的特徵,一柳」,起

[于研究第一戬老子姓,於不月近日發六日 一名里居問題,十三日 下午八時,假該授大

經濟估第一級 協同中學學生團隊,

|硭幣三喀孔子問

貨幣經濟與營利榄]

|第四講老于西煜搀

「現代經濟當明

,廿九日:老子研究

自由化與社會福利

尙3巷

刊敎,修

之說,五月四日,親二頁請讀

代經濟常跌第五霑稞

濟統計阂报數,六日 者注意

「老子研究第五講

A.磁場,磁場強度及磁矩問答計算題題解

1. 解:磁極强度——於臭空中,以達因之

力將同名極排斥種之强度猁

為該磁極之石兹桃强度

第在育 不,新江欲、

英文

現選

·考試題預習專欄

古 年

生物科

(廿三)

•

山度士·

BIOLOGY

磁場強度 於磁場中,某点单位 磁亟强度所受之作用力之合力称 為該点之磁場強度.

3.3.Sandhu

F

Mg:

242-1

m.m

F

式中以為所求之桎强

a. Floating on top = HUMUS b. Top-most layer - CLAY c. Second layer - SILT

a.

e.

Third Layer = FIND SAND Fourth layer" GRAVEL(or

Coarse sand)

(B.Sc.Dip.Ed)

1.How can you show the rough composition of SOIL?

The rough composition of so11 can be snown by the process of SEDIMENTATION. A handful of soil from a flower-bed is shaken in a tall graduated glass-jar containing water and allowed to settle slowly. After some time the following layers can be noticed, their percentage being shown by the graduation marks on the jar:

It will be found theit Clay retains much more water than Sand. This is on account of the large number of small particles and the LARGE ADSORBTIVE SURFACE }

thus created.

Huaus

>CLAY.

→SILT

→FINE SANC

› GRAVEL

2F

=

2x5x980

23.98

= 20.2 c. J. S

单ng

2.44:

(a) Capillarity of. Clay, toab and Sand

(n). Water Retentive Power of lay and

LAY, LOAM and.

He(电磁)

图中PQ為中和

ZM

60

D

= 0.0019

605

ď

2x400

603

∴Hg=0.0037椠

HD = M = 400

3 解:磁矩--磁铁之磁極强度5.

两相间之距離之乘積稳之

He

H

<< HA =

A

He

H

20

He

tan 300

2 Ma

(d2-F

M= 磁

棒

是磁矩

#a tau 30° (d2-l 2)2

zd

-te

0. 18 × 1/√3 × ( 20 * ~5*)?

2420

=365-4

c.gs.单位

1. 絕緣之學体,置於帶電体之近劳

其与带電体鄰近之一端

The Capillarity of sold is or great importance to plants because the amount of water available in the soil may determine their growth. The following experiment can be performed in the laboratory to show the capillarity of the different kinds of soil:

II.Give experiments to show the following:

(b) Drainage rate of Clay and Sand.

(a) EXPERIMENT TO SHOW THE CARILLARITY

SAND.

Cake 3 call wide glass tubes (about 2'2' tall And "wide), cork them at one end with corks having holes in the centre and placé some cotton org

ter the holes inside the tubes. Fill the tube with Clay, Loam and Sand respectively and stand then upright in a ti sketch. Care must

ire perfectly de

day.

The next day

water is hig est in Loam that Clay h Lowest. This very

between then very small b

have large a

tubes with big

water as shown in the that the 3 kinds of soil

apparatus aside for a

that the level of

h Clay, second high- This experiment shows arity and Sand the ticles

* of Clay are mall air-spaces Capillary-Lubes with

ig particles and hence hus act like canillary

(b) EXPERIMENT TO SHOW DRAINAGE RATE OF CLAY and SAND.

Take 2 large glass-funnels, place cotton swabs in them and pack them with Clay and Sand respectively Place the funnels over the mouths of big measuring cylinders as shown in sketca.

ONG KO

CLAY

SANDE

> Drained volume.

-Drained volume.

T2RAINAGE RATE OF CLAY SAND.

•Equal volume

of water.

→CBY

→Volume out

dripped

SEND...

"Volume dripped

i

WATER KETENTIVE POWER OF CLAY SAND.

CLAY

JBX

ARIES

Pour some amount of water into each funnel and note the amount of water draining from each in the same time. Repeat the experiment two times, and find out the average volume of water draining out for each

It will be noticed that the rape of crainage 19 Slowed in Clay and fastest i Sand. Hence Day Sells

are mostly wet and Sandy Soils dry,

tot EXPERIMENT TO SHOW THE WATER DATENTIVE POWER OF CLAY

and SAND.

Fit up the apparatus es in EXPERIMENT II Above but make sure that the Clav and Sand are Derfectly drv.

Add equal measured quantities of water to each soil. Leave the apparatus aside for some time.

when no more water drips from either funnel find out the volume of water that has drapped into each

graduated cylinder. The difference between the amount of water added and the water dripped out will give the volume of water retained by each soil

5 +50 e. s. u Ä -50 e.s.u #E # *

則距两者均為5種處電場強度,

B. 電梯、電流、及歐姆定律填-

題

他端

2-单体上之電荷,分佈於

6 導線之電阻与導線之長度成

5其横截面積成

比

表面 曲率愈大之處,其電荷密度愈

3. 物体貯存 之能力,称為電容!

宽容各為8微法拉之電容4個,并

微法拉:串联時 微法拉。

联時之電容為

之電各為

4.平板電容器所能器之電量与两板间

分两板之

成反比,与两板间

成正比,

如

横截面相等之玻管長921糧,滿貯 水銀,其比重為13.6,其重為10-15克 其電阻為1.059元則水銀之電阻 係數為

7. 溫度不变時,一段電路內之電流强 度与其两端之, 成正比,5真

成反比。

有阅

臭两端之電位差為48伏的沙比電 打電阻為

Highest Level <

叫

SAND

higbret

level

→→ Lowest level

CAPILLARITY OF DIFE SOILS.

Q.1.(a)Define Transpiration

(b)Explain Cuticular & Stomatal Transpiration.

2.11.What are the Conditions that affect Transpiration?

两電池吴電動势各為11及103伏特 内组分别舀0.4及0.6歐姆,以雷组 為千儿之雷阻線連結之若两電池 芝電動势之方向相同其電流强度為 —————————,若相反其電流强度易三 g 電池4個電動勢各為15特 内组

各岛

!

联時之電流為____ 至联時之夢(流, 為

10. 電池A之電動勢為2v内阻1几電池

B電動势為2.5V内阻无几,以 .電阻線連結A之两極或B之两極

其電流强度相等則此電阻線之電面 為

電流強度為