WAH KIU YAT PO
報日僑
四期星
買二第張六第二日七十月一十年辰丙靨复
韓
HOMMAGE DE L'ACCUEIL DE PARIS
CONSEIL MUNICIPAL DE PARIS.
吉松中臣氏年一九一上】
單金及狀類之氏希后會發頒是市会(下
日六月一年七七九一公年六十六國民華中化女育教
華僑文化
當代人物畫大師曾后希
我親見,這位大師
英的肉
一、 功力之上Ê.
504-36-EKOFER - 中國的人物畫發力,細察物性、神情、爲中外人士所激賞。 夏夷攢界。所以,一幅畫的優劣,雅俗,完全數於畫家本务的葉號, 不見;而且蹇毀, 張生動」。中國養或將年累月在華區上心,更從美思基上下功夫 - 【塔探求做到「茔美」的表現,也就是中國畫的話本精牌所在,藝術的還降,在動態中,絲毫 | 中限繪畫,是以峯法爲其骨骼,法爲其血肉品飛耪-才能「氣 畫風格,因爲明治黼新以後的日本畫,便是採用中因合品的... 捕天越全失。设有個會改求新的畫,以中國畫法西法,而形成日本。轉眼個老店好好的 落。民國以來,從事山水的,大都以清代的四主篇宗,不免失之板盛,那位落哥,如摄謊,草 任宇表 中國繪 邊於漢-鑑於唐宋,於元明;到了滋濟:已漸繼風格低、內盡的感,在製費的】 飛诗,花 富翁氏,在巴黎美台掾十八强演,而月奇 歎爲觀止。又瞥見他高 LESE - RIKH⚫
EXDEEK-E 一类人,便已發現紙上3
他練來之,古會 BERKE · BLAE
**-K
--SE
ZDE · [HNRA
,也盛祗一個半錄頭完
·此心;
巫;反而人物生不時
如此才衆,究將經過多
無機來說,人物畫自此
人物才能
人物畫家是全能的。
• DARK-KANI PEYER-CH KERNE | ARK-REEL +
上的泅孕,藝術上的激一人,决非倖致。其山
防水
「巫龜海立園」,及「闖
,在大會堂八核蹶出 )
·「雨後直色」萬后希作
麻饼昂宵的至美境界。一堂具同感。 - KBREKKUR: GENEROS -
·五日至九日
3
m.
1977中學會考試題預習專欄
2 (M+m)2
(27)
明德社主編
but
mv
2s
my = (M+m) a'
物理
my2
25(M+m)
a'
2
(M+m) 2
25(M+m) mv2
m's
(Ans.)
Physics 9.
Answer to Ex.4
a) i) By conservation of /
momen tumm.
Let the number of bullets be n
nmy MV
MV.
my (Ans.)
ii) The initial kinetic
energy of the system + √ MV2
— mv2
Let the velocity of the target be V' when the first bullet strikes the target
By conservation of
momentum. dem V-
MV mv =
MV-mv m+M
The Finial kinetic. energy of the system
(M+m)
— (m+M) v12
(m+M) (MV-my) 2
1(MV-mv) 2(M+m)
m+M
The loss in kinetic energy
mv 2
+
M2 - 1
1(MU—nv (M+m
> [ [ mv 2 + Mv2 XM+m)~ {MV~mv)2
MM
(M + n
mMv+mMv+2mMvv
M+m
+ v)2 [2{M+m} /*!*
(Ans.). b) Let the velocity of the
bullet be v when it strikes the block and then the system obtains a velocity V
By conservation of
· momentum
my = (m+M)v——. ----(1) Let the retardation of the bullet be a..
- ma
= 2as
a =
25
The force applied to the block when the bullet strikes,
25
= (M + m)a'.
when a is the accelera- tion of the system when the bullet strikes the block.
Let the distance required be d.
= 2a'd.
v2
d =
22
m M+m
-١٧-
nt "M+m
2a
from(1) V
Exercise 5: Heat, light and
sound.
a) A copper calorimeter of
mass 0.5kg contains 0.8kg of water at 25°C. The whole system is put on a gas stove" and it takes
8 minutes to come to boil. Find
i) The Power of the gas
stove.
ii) The time taken for the
water to boil away com-
letely.
K
(specific heat capacity
of copper-420Jkg. specific latent heat, of steam=2260000Jkg.
b) In an experiment to deter-
mine the specific latent heat of fusion of ice, the following experimental data is obtained.
Mass of copper calorimeter
= 0.06kg.
Mass of Cooper calorimeter +water 0.160kg Mass of Copper calorimeter
+vater+ice - 0.1845kg Initial temperature of calorimeter and water =35°C.
Final temperature of mix-
ture = 13.8°C
K
Specific heat capacity, of
water 4200 Jkg specific heat capacity
of copper = 420 Jkg K-1 Find the specific latent heat of fusion of ice ac- cording to the above data. iv) Find the length of an
organ pipe, opened at both both ends, designed to Produce the same tone as the string.
v) Compate the frequency
of the second overtone
from an organ dipe closed at one end with the same length as that in (iv).
2. In an experiment to
determine the focal length of converging lens, the lengths of the object, and the real image are mea¬ sured for different image distances are measured. leave distance (=) length of mage {s}
12 De
0.3
0.7. 0.8
0.01 0.02 0.23$ 0.04] 0.05 0.06
.1.9
0.07
tenth of object (e)
20-0
i) Fill in the following
table.
ii) Plot a graph of magnifi- cation against image distance
iii) Determine the focal
length of the converging fense from the above graph.
3. A string. under tension is
observed to vibrate with a frequency of 40Hz in its fundamental note emitted when supports are 2m apart. The mass of the string is 0.05kg.
1) Find the velocity of
Propagation of the
transverse wave in the string.
ii) Find the tension in
the string.
.
iii) If the velocity of
sound in air is
330m/sec, what is
the wavelength of
the fundamental note
heard by the ear?
化學(九)·朱宏林·
Questi emistry (9)
15
The diagram below shows the circuit for the elec- trolysis of a 0.1M cooper(II) sulphate solu- tion and a 5M sodium chloride solution.
Call A
Electrodes:copper
battery
Choostat
gas syringu,
gad oyringe
-U-tube
Call B
Solution: 0.1M oopper(II)
sulphate
ilee trodess carboni
solution: SM sodium
chloride
a) Give the ionic equations
for the reactions tak- ing place at the elec- trodes P, Q, R and S. what are the gases to be collected in the gas-syringes X and Y respectively?
b)
C) write down three factors which could increase.
the rate of electrolysis in cell B.
d) when a steady current
has been passed through the circuit for 3 minutes and 13 seconds, it is found that the gas.collected in gas syringe Y occudies 22.4cm3
at s.t.D.
i) what is the volume of
the gas collected in gas-suringe x at s.t.o.?
ii) What is the quan ti ty
of electricity that has been passed? iii) Hence, or otherwise,
determine the magnitude of the current used?
iv) What is the change in the mass of electrode 0?
After the current has been passed for. 3 minates and 13 seconds, it is then immediately reversed
and bassed in the opposite direction for another
3 minutes and 13 seconds. i) what gases are now
contained in the gas- syringes X and Y respectively? ii) What are the volume
of the gases, measured at s.t.D., in gas- syringes X and Y respectively? Are the two volumes the same? iii) what do you expect the masses of elec- trodes P and Q would now be respectively as compared to that
before the experiment?'
) If a few drops of litmus solution is added to the solution in the cell B after the electrolysis has been carried out for
some time, what will be
its colour? Explain briefly.
in-
What happe s to the in- tensity of the blue coloration of the
solution in the cell A
during the electrolysis
Explain briefly.
| Question 16.
A.
A mixture of gases contain- ing 10cm of methane, 20cm
of carbon monoxide and 200cm/ of air, was ignited and completely burned. The pro- ducts were passed through a drying tube containing anhydrous calcium chloride and brought to the original temperature and pressure. Assume that air contains 20% oxygen and 80% nitrogen by volume. a)Write the chemical equa-
tion for the reactions involved in combustion. b) Calculate the volume of
the unreacted oxygen. c) Determine the change in
the volume of the gaseous mixture.
d) Find the composition, by volumes, of the Final mixture.
B..
The block diagram below summarizes a series of che- mical reactions.
Common salt
Add NaCH
allow to cryst
allize
gas
Calourless
A
water
Acidic solution B
Greenish yellow gas.
C
silver
nitrate
solution
White precipitate
D
a) Identify and give the
chemical names for A,B,C and D.
b) What reagent(s) would you
use to
i) convert common salt
to gas A?
ii) convert B to C with-
out heating?
c) Give equations for the
reactions in
i) and ii).
d) what is the effect on
moist blue litmus paper of
iii) C? i) A? ii) B? e) Describe what happens
and explain briefly
گھر
i) when the precipitate
D is added into ex- cess aqueous ammonia; ii) When the precipitate
D is exposed to light for some time.
no
C. The iron ore, haematite,
is found to contain 85% of iron(111) oxide and
other iron-contain- ing substance. Calcula how many kilograms of
are required to Produce one kilogram of iron, assuming the pro- cess of extraction to be 100% efficient.
A
ore
(At. wt. Fe-56, 0=16) Question 17
2.74 of a mixture of
ammonium sulphate and sodium sulphate were weighed out
into
a
的您的
flask and 50cm of
0.5M sodium hydroxide were
added. The solution was
boiled to expel all ammonia
and the excess sodium
hydroxide was then neutrali- zed with 12.5cm of sulphuric acid containing 19.69. Per cubic decimetre (or litre). (At.wt. Na=23,0=16,H=1,
N=14,S=32,Ba-137,
Ca-40)
a) write down the equations
for the chemical reactions involved.
b) Calculate the composition
of the original mixture' by weight.
c) If an excess of calcium
chloride solution was then added into the resulting neutral solu- tion, white precipitate was observed.
i) What is the white
precipitate?
ii) Give the ionic equation
for the precipitation reaction...
iii) Assuming the precipi-
tation is complete, what is the mass of the precipitate:
B.
obtained?...!
2M hydrochloric acid is add- ed into a vessel containing some sodium sulphi te crystals and the mixture is warmed gently. The gas liberated is passed into some distilled water in a test-tube as shown below.
Teat pipette
heat
2M hydrochloric
acid
sodium sulphite
distilled water
a) write the ionic equation
for the reaction be→ tween the acid and the sodium sulphite.
b) Describe and explain
what happens when the resulting solution in tube A is added to i) acidified potassium dichromate solation ii) bromine water iii) hydrogen sulphide
solution c)If a little barium chloride.
solution is added to the reaction mixture obtain- ed in (i) and (ii), what will be observed? Name the substance observed,
Correction for chemistry (7).Q.14A
Im2 of silver nitrate solation molded
Correction for chemistry (8) Answer to 0.13 A.e) The cyclst
The cyclobutane is not an isomer with a formula
of C4H100