Microsoft Word - chapter 3 trial structure

FORCES & PRESSURE3.1 PRESSURE1. Question 3: Teknik 07Diagram 3.1 shows a man weight of500 N sitting on 800 nails and feels no pain although the nails exerted pressure to him. Diagram 3.2 shows the surface area of the tip of the nail

DIAGRAM 3.1DIAGRAM 3.2(a) State the SI unit of pressure?.............................................................. [1 mark](b) Calculate the pressure exerted on the man in Diagram 3.1[3 marks](c) Its easier to cut through a loaf of bread using a sharp knife than a blunt knife. Explain this situation............................................................................................................................. [2 marks]

2. Question 5: Kelantan 09Diagram 5.1 and Diagram 5.2 show two balloons A and B exerted with the same force.

(a) What is meant by pressure?............................................................... [1 mark](b) Based on Diagram 5.1 and Diagram5.2,(i)Which balloon will burst easily?............................................................... [1 mark](ii) Compare the pressure exerted on the balloon................................................................ [1 mark](iii) Compare the surface area offinger and needle which in contact with the balloon........................................................... [1 mark](iv) Relate the pressure exerted on the balloon with the surface area........................................................... [1 mark](v) What happens to the pressure on the balloon if force exerted is increased?........................................................... [1 mark]3. Question 6: Johor 07A farmer has two vehicles with the same mass and the same number of wheels.Diagram 6.1Diagram 6.2

(d) A manufacturer of car wheels estimates that the area of a car wheel in contact with the road is about the same as the area of a persons shoe in contact with theground. A car weighs 10 000 N and a driver weighs 500 N.(i) Calculate the ratio pressure of car on ground : pressure of driver on ground. The car has 4 tyres and a driver has 2 feet)(a) Based in the Diagram 6.1 andDiagram 6.2:(i) compare the contact area between the wheels in the Diagram 6.1 and Diagram 6.2................................................................................................................................ [1 mark]

[2 marks] (ii) Suggest why it might be a goodidea to reduce the pressure of the air in car tyres if the car is to be driven over soft sand.(ii) compare the weight of vehicle 1 and vehicle 2.

the

...........................................................................................................................................................................................................

[1 mark]................................................................ [1 mark](b) Which vehicle should the farmer use when driving across his fields when the ground is very soft? Give your reasons.......................................................................

3.2 LIQUID PRESSURE4. Question 5: SBP 07Diagram 5.1 and Diagram 5.2 show two dams with different shapes....................................................................... [2 marks](c) Name the physics concept involved.

Diagram 5.1

Diagram 5.2............................................................... [1 mark](a)Based on Diagram 5.1 and Diagram5.2(i)Compare the dams in Diagram5.1 and Diagram 5.2....................................................................................................................... [1 mark](ii) Compare the pressure at pointA and point B in the lake................................................................................................................................................................................. [1 mark]

Diagram 5.3(i) Name the apparatus shown in diagram 5.3......................................................[1 mark](b) (i)

Based on the answer in (a)(ii), which dam is stronger?

(ii) Give a reason why water flows from the beaker to the cylinder as shown in Diagram 5.3.........................................................

............................................................................................................. [1 mark](ii) Explain the reasons for your answer in (b)(i)................................................................................................................ [ 2 marks ](c) Diagram 5.3 shows an apparatus used to remove water from a beaker to a cylinder.

..................................................... [1 mark](iii) In Diagram 5.4, mark the water level in the cylinder when water stops flowing from the beaker to the cylinder.[1 mark]5. Question 7: SBP 09Diagram 7.1 shows a concrete water tank filled with water.Diagram 7.1(a)State a factor that affects the water pressure in the tank............................................................... [1 mark](b)(i) Compare the water pressure at Pand Q.......................................................... [1 mark](ii) Calculate the water pressure at Q. (Density of water = 1000 kg m-3 )[2 marks] (c)Diagram 7.2 shows water flowsfrom the concrete tank to the house water tank.

Diagram 7.2

(i) What is the factor that causes the water to flow from the concrete tank to the.............................................................. [1 mark](ii) The flow of water from the concrete tank to the house will stop at level P.Explain why the supply stops?............................................................................................................................ [2 mark](d) (i) Suggest two modifications that can be done to ensure the water flow continously to the house water tank............................................................................................................................. [2 mark](ii) Draw a water tank that can withstand high water pressure .[1 mark]3.3 TEKANAN ATMOSFERA6. Soalan 5: Melaka 09Rajah 5.1 dan rajah 5.2 menunjukkan dua manometer merkuri dalam sebuah makmal. Bekalan gas dalam rajah 5.1 adalah kurang daripada rajah 5.2(a) Berdasarkan Rajah 5.1 dan Rajah 5.2(i) Nyatakan persamaan magnitude dan arah bagi tekanan.Magnitude : Arah :

[2marks](iii) Berapa jumlah tekanan pada titik W?[1 mark]p between e gas[1 mark]5(a)(ii)equationercury ssure. [1 mark] (c) (i) Bekalan gas dialihkan. Nyatakan perubahan ketinggian merkuri bagi kedua-dua rajah. [1 mark] (ii) Berikan satu sebab bagi jawapan pada (c)(i). [1 mark]3.4 PRINSIP PASCAL 7. Soalan 2: Melaka Trial 08Rajah 2 sistem brek hidraulik sebuah kereta. Luas kawasan silinder utama dan silinder kecil adalah 5 x 10 - 4 m2 dan 6.0 x 10 - 4 m2 Rajah 2(a) Nyatakan Prinsip fizik yang terlibat dalam Rajah 2........................................................... [1 mark](b) Pada Rajah 2, tunjukkan arah pergerakan bagi silinder utama dan silinder kecil.[1 mark](c) Nyatakan hubungan diantara tekanan cecair pada silinder utama dan silinder kecil............................................................ [1 mark]

8. Soalan 3: Kedah 08Rajah 3.1 menunjukkan model jek hidraulik. Daya F1 yang dikenakan pada piston kecil R berupaya mengangkat dua beban yang diletakkan pada piston S dan T.

(a) Namakan prinsip yang digunakan pada jek hidraulik.

.. [1 mark](b) (i) Sekiranya F1 = 5.0 N, hitung tekanan yang ditindakkan pada piston R.[1 mark] (ii) Bandingkan tekanan cecair pada S dan T kepada tekanan R.. [1 mark](iii) Tentukan magnitude pada daya F2(d) Pedal brek ditekan dengan daya 15N. Hitungkan daya yang dikenakan pada silinder kecil.[2 marks]

[2 marks](c) Berikan satu sebab kenapa adalah lebih sesuai menggunakan cecair daripada udara sebagai fluid. [2 marks]3.5 ARCHIMEDES PRINCIPL9.Question 3: MRSM 09Diagram 3.1 shows a freely fl hydrometer in water.

........................................................ [1 mark]Diagram 3.2(c) Diagram 3.2 shows an object which has a weight of 0.25 N fully immersed in water. Its apparentweight is 0.22 N.= 1000 kg m-3]

[Density of water(i)What is the buoyant force on the object?[1 mark]Diagram 3.1A principle states that:When a body is immersed wholly or partially in a fluid, the buoyant forces acting on the body is equal to the weight of the fluid it displaces.(a) (i) Name the principle above.

(ii)Determine the volume of the object.[2 marks]10. Question 3: Kedah 09Diagram 3 shows a block of concrete being lowered to the bottoms of a lake.3

......

The volume of the block is 2.5 m

and its[1 mark]

weight is 125 000 N. The density of the-3(ii) Mark on Diagram 3.1 thedirection of the two forces acting on the hyrdrometer.

water in the lake is 1 010 kgm .[1 mark](b) The hydrometer is removed from water, dried and then placed in oil. (i)Predict the length of thehydrometer that is submerged in oil, compared to length in water........................................................ [1 mark](ii) Give a reason for your answer in3(b)(i).

Diagram 3(a) State the SI unit for pressure.......................................................[1 mark](b) State one factor that affects the pressure at a point below the surface of a liquid.(c) (i) Calculate the weight of the water displaced by the block.[2 marks]

[ 1 mark ] (iii) compare the weight of waterdisplaced by sphere A and sphereB........................................................... [ 1 mark ](ii) Calculate the tension, T, in the cable.[2 marks]

(iv) relate the weight of sphere and the weight of water displaced........................................................... [ 1 mark ](v) relate the weight of water displaced and upthrust11. Question 5: SBP 08Diagram 5.1 and Diagram 5.2 show two solid spheres A and B with different density place in the water.

(a) What is meant by density?............................................................[ 1 mark ]

.........................................................[ 1 mark ](c)Name the physics principle involved in Diagram 5.1 and Diagram 5.2.............................................................[ 1 mark ](c)State one application of physics principle in 5 (c)............................................................... [ 1 mark ]12. Question 5: Mid Melaka 09(b) Based on Diagram 5.1 and Diagram5.1,(i) compare the density of sphere Aand sphere B........................................................... [ 1 mark ](ii) compare the weight of sphere Aand sphere B...........................................................

Diagram 5.1 shows three boxes with different density at stationary state.Diagram 5.1Diagram 5.2 shows the boxes float still when placed in a liquid.

(c) Based on the answer in 5(b)(ii), name the physics concept involve.[1 mark]13. Question 5: Trengganu 07A fisherman finds that his boat is at different levels in the sea and in theriver, although the

boatcarriesDiagram 5.2

the same load. The density of sea water and river water is 1025 kg m-3 and 1000 kg m-3 respectively.(a) Based on the situation in Diagram5.1 and the situation in Diagram5.2,(i)State similarities about the volume and the net force of the

Diagram 5.1(a)

Diagram 5.1(b)boxes.Volume: ................................ Net force of the boxes:...............................................[2 marks](ii) Compare the weight of the boxes in ascending order.

Diagram 5.1 and Diagram 5.2 illustrate the situation of the boat in the sea and in the river.(a)What is meant by density?.............................................................. [1 mark](b)Based on Diagram 5.1 and Diagram5.2 :(i)Compare the

level of the boat[1 mark]

in the sea water and in the river water.(b) Observe Diagram 5.2(i)Describe the position of the boxes in the liquid[2 marks]

.......................................................................................................... [1 mark](ii)Compare the displaced by

volume of water the boat in the(ii)Explain your answer in5(b)(i).[2 marks]

sea and in the river.......................................................................................................... [1 mark](iii) Compare th

density of seawater and river water........................................................................................................... [1 mark](c)(i) Relatethevolume

ofwaterdisplaced to the density of water............................................................................................................................. [1 mark](iii)Deducerelationship

between

(i)State one func ion of plimsollweight of the boat and the weight of the water displaced....................................................................................................................... [1 mark](d)Namethe physicsprinciplethat explains the situation above............................................................... [1 mark]

line?........................................................ (ii)What is the buoyant force actson the boat........................................................ [1 mark](iii)In the Diagram 7.2, mark the level of water when the boat enter the river Mouth.(e)A submarine can sail on the sea surface and under the sea by using the principle stated in (d).How a submarine on the surface of the sea can submerge?........................................................................................................................... [1 mark]

[1 mark]14. Question 7: N9 08(a) Diagram 7.1 show a boat made from steel floating at the sea. The mass of the boat is 7500 kg.

(iv)Explain your answer in (a)(iii)...................................................... [1 mark](b) Diagram 7.3 shows a hot air balloon floating stationary in the air.

(i)State the relationship between the weight of air balloon and the upthrust...................................................... [1 mark](ii)What will happen to the air balloon if the load is dropped?

(a) (i) Name the science principle involved in the insecticide sprayer............................................................ [1 mark](ii) Which region experiences low pressure?In the box below, tick the correct answer.X YX[1 mark]..................................................... [1 mark](iii)Explain your answer in (b) (ii)........................................................................................................... [2 mark]

(b) State one reason for your answerin 2 (a) (ii)........................................................... [1 mark](c) Describe how the instrument produced a fine spray liquid?........................................................... [1 mark]3.6 BERNOULLIS PRINCIPLE15. Question 2: Melaka 08Diagram 2.1 shows an insecticide sprayer.

16. Question 3: SBP 08Diagram 3.1 shows a horizontal tube AB with both of it ends are closed with rubber stoppers. The tube is also fixed with three vertical tubes X,Y and Z. Water is then poured into the horizontal tube AB.

(i)Mark the water level in the vertical tube X,Y and Z.[1 mark](ii) State one physical quantity that affected the water level in the above diagram............................................................ [1 mark]Diagram 3.2(c) A ventury tube AB now is replaced with the ventury tube shown in diagram 3.2. Water flows uniformly from end A to end B of the tube and it is found that the water level of tube P is at Z. (Density of water =1000 kgm-3)(i) Compare the water level in the vertical tube P,Q and R.

17. Question 5: Perak 07The Diagram 5.1 shows before and when air flow through tube.The Diagram 5.2 shows the situation of the roof of a house before and when high wind blows........................................................... [1 mark]

Before air flows

When air flows(ii) Name the principal involve in b(i).

Diagram 5.1........................................................... [1 mark](iii) By neglecting atmospheric pressure, calculate the pressure caused by the water column at point X.

Before air flows

When air flowsDiagram 5.2[2 marks](a) What is meant by speed?.......................................................... [1 mark](b) Based on Diagram 5.1 andDiagram 5.2:(i)State two similarities for the situations in Diagram 5.1 and Diagram 5.2.1. ...........................................................................................2. ..............................................

In Diagram 5.3,(i) Compare the speed of air at Qand at R..................................................... [1 mark](ii) Compare air the pressure at Qand R...................................................... [1 mark].............................................. [2 marks](ii) Compare the air pressure above the roof and below the roof in Diagram 5.2..................................................... [1 mark](iii) Relate the speed of the air and the pressure of the air..................................................... [1 mark](c) Name the principle involved in 5 (b)(iii).

18. Conceptual: Kedah 07Diagram 9.1 and Diagram 9.2 show how water spurts out from its container when the valve is opened............................................................ [1 mark]

Diagram 9.1

Diagram 9.2(d) Diagram 5.3 shows an instrument use to spray an insecticide.

When a liquid is held in a container, it exerts pressure on the container.(a) What is meant by pressure?[1 mark](b) With reference to Diagram 9.1 and Diagram 9.2, compare the depth of the water in both containers, the rate at which water spurts out and the distance travelled by the water that spurts out.Relate the distance travelled by the water that spurts out to the depth of the water. Hence make a conclusion regarding the relationship between the pressure and the depth of the water.[5 marks]19. Understanding: Kedah 07A small bubble of air is released from the bottom of a lake.(i) Explain what happens to the size of bubble as it rises to the surface of the water.

(ii)

Explain why places at high altitude the temperature is colder compare to places at low altitude which is more warmer.[4 marks]22. Understanding: SBP 07[2 marks](ii) Explain how this change affects the upward motion of the bubble.[2 marks]20. Understanding: Trengganu 07Diagram 9.2 shows the toothpaste flows out of its tube while squeezing at the bottom end.

DIAGRAM 9.2Explain how the toothpaste flows out and name a physics principle related to it.

Diagram 11.2Diagram 11.2 shows rod A and rod B of different densities are immersed in water. Explain why the rods float in water and why B sinks deeper than A.[4 marks]23. Understanding: Trengganu 07Diagram 11.1 shows a small aircraft. Diagram 11.2 shows a cross section of the aircrafts wings.Diagram 11.121. Understanding: Perak 07

[4 marks]]

(i)What is meant by pressure?[1 mark]Diagram 11.2(a)Name the shape of the cross sectional of the aircraft wings.[1 mark](b)The aircraft obtains its lift when flying due to a difference in pressure of the air between the upper and bottom sides of the wings.(i) Explain how this difference in pressure is produced.[3 marks]

DIAGRAM 11.1(i)What is the meaning of buoyant force ?[1 mark ](i)Name the principle involved in your answer to(b)(i)[1 mark]

(ii)Explain why the load float ?

balloon and the[4 marks ]24. Teknik 07Diagram 11.1 shows a gas balloon, moored with a load at the Book Festival. The mass of the balloon is 5 kg. The balloon and the load float at a certain height and the buoyant force acting on the balloon is 250 N

(c)

If the mooring rope cut off, the balloons will rise up.(i)Calculate the resultant force of the balloon(ii) Calculate the initial acceleration of the balloon(iii) what is your assumption in your calculation in c(ii)[5 marks] Table 11.2 shows the characteristics of four sets, A, B , C and D of balloons, ropes and loads .SetType of gasfilled and densityMass ofloads/kgMaximumTension allowed / N

AHelium(0.17 kg m-3)5300

BHydrogen(0.09 kg/m3)20250

CHelium(0.17 kg m-3)20300

DNitrogen(1.25 kg/m3)5100

As a supervisor , you are assigned to investigate the characteristics of set balloons, ropes and loads that could be used for the purpose.Base on the table 11.2; (i)Explain the suitablecharacteristics of the balloons, ropes and loads so that it can be used(ii) Decide which set is most suitable to be used at the festival.(iii) Explain why the others set is not suitable[10 marks]25. Making decision problem: Perak07You are asked to investigate the characteristics of tractors and choose a tractor that can do heavy works, an example of a tractor is shown in Diagram 11.2.Diagram 11.2

(i)Explain the suitability of the characteristics of the tractors used to do heavy works.(ii)Determine the most suitable tractor and give reasons for you choice.[10 marks]26. Making decision: SBP 07Diagram 11.1 shows an apparatus which is used to determine the density of a liquid. These apparatus is an application of Archimedes Principle.

Diagram 11.1You are required to build a hydrometer that can be used to measure densities of concentrated acids.Table 11.1 shows the characteristics of 4 types of hydrometers L, M, N and O.You are requested to

choose a suitableBased on the table 11.1; (ii) Explain the suitablecharacteristics of the hydrometer so that it can be used to measure different densities of acids.(iii) Decide which hydrometer is most suitable and give reasons.[10 marks]

wing to be installed with the body of the aircraft.By referring to the information given in Table 11, explain the suitability of each characteristic and suggest the most suitable wing to be installed with the body of the aircraft.[10 marks] (b) An aircraft installation departmentchooses wing P to be installedwith its aircrafts which has maximum mass 800 kg.(i)If the air pressure below the wing is more than the air pressure above the wing by 500 N m-2, calculate the force that exerted from below of the wing.[2 marks]27. Making Descision: Trengganu 07 (a) Table 11 shows characteristic of four design of the aircraft wings.

(ii)Determine the resultant force andits direction that exerted to the wing of the aircraft.[2 marks](iii) Calculate the vertical acceleration of the aircraft.[1 mark]28. Qualitative problem: Kedah 07Diagram 9.3 and Diagram 9.4 show the side view of two different models of a dam made from bricks and concrete.Diagram 9.3Diagram 9.4(i) Which model is preferable? Explain your answer.

[10 marks]30. Quantitative problem: Perak 07Diagram 11.1 is used to study the effect of altitude on the magnitude of atmospheric. The atmospheric pressure can be measured by a Fortin barometer. The density of the mercury used in the Fortin barometer is 13 600 kg m-3.[2 marks] (ii) Suggest two uses of the water in thedam.[2 marks] (iii) Explain the modifications that need to bemade to the dam to enable it to store more water safely.[6 marks]29. Qualitative problem : Trengganu 07Diagram 9.3 shows a hidraulic jack which can lift up a maximum mass of 1 metric tonne.

What is the

Diagram 11.1(i)atmospheric pressure at thesea level in pascal (Pa)?(ii)atmospheric pressure experienced by the aircraft in pascal (Pa)?(iii)atmospheric pressure experienced by the satellite in pascal (Pa)?DIAGRAM 9.3Using suitable physics concepts,

31. Section B: SBP 08

[5 marks]explain the modification that needs to be done to the:i.size of the piston,ii.material of the body, iii.type of liquid used, iv.handle andv.ability to reset the piston position easily of the hidraulic jack to enable

Diagram 9.1 shows a hot air ballooncarry up the loads at a certain height in the morning and diagram 9.2 shows the same hot air balloon carry up the loads at a certain height in the afternoon. This hot air balloon used helium gas at the same temperature in both situation.it to lift mass of greater quantity.

In the morning

In the afternoon

(a) (i) What is meant by density?[1 mark](ii) Using diagrams 9.1 and 9.2, compare the density of the air, the load that can be carry up by the hot air balloon and the height of the hot air balloon from the ground.Relate the buoyant force with the density of the air to make a deduction regarding the relationship between the density of the air and the weight of the load carry up by the hot air balloon.[5 marks](b) Why does an iron nail sink in water

By considering the ship in Diagram9.3, give some suggestion how you would design a submarine that can submerge in a deep sea. In your explanation, emphasise on the following aspects( i ) the shape of the submarine. ( ii ) material used for its body.( iii) additional component to control its buoyant force and to observe the sea surroundings.( iv) safety features for the crew of the submarine.[10 marks]32. Section B: Trengganu 08(a) Diagram 9.1(a), Diagram 9.2(b) andDiagram 9.2(c) show a rock hung on a spring balance in air, immersed in waterand cooking oil respectively. Thereading of the spring balance foreach situation is as shown in Diagram9.1.but a cargo ship with a floats?

huge mass[4 marks](c) Diagram 9.3 shows a ship.(i) What is meant by weight?

[1 mark]

Using suitable physics concepts, explain the required modification needed in designing a barge that can carry more and heavier goods, move faster and safe in fresh and salt water.(ii) Using Diagram 9.1(a), Diagram 9.1(b) and Diagram 9.1(c), compare the spring balance reading, the weight lost of the rock and the density of the water and the cooking oil.Relating the weight lost and the density, deduce a relevant physics concept.[4 marks]

You can emphasise on the following aspects in your modification;i.material usedii.plimsoll lineiii.shape and size of the barge[10 marks](iii) Name the physics principle that explains the above situations.[1 mark] (b) Diagram 9.2 shows a copper block anda bowl shape copper sheet of samemass.Explain why the copper block sink in water but the bowl shape copper sheetfloats on water.[4 marks]

33. Section C: Kelantan 08Diagram 11.1 shows two boats of the same weights floating on the surface of water in the sea and in the river.

(a)(i) What is meant by weight?[1 mark] (iii)Explain why the boat is able tofloat?[1 mark] (iv)Explain why the sinking levels ofthe boats are difference in the river and in the sea.(c)Diagram 9.3 shows a barge used to transport goods from fresh water port to the ship anchored away from the seaside.

[3 marks](a) If the volume of the boat thatsinks in sea water is 250 mm3 and the density of sea water is 1 080 kgm-3, calculate(i)Up thrust which acts on the boat.[3 marks] (ii)The volume of waterdisplaced when the boat is in the river. [density of river water = 1 000 kgm-3][2 marks](b) Diagram 11.2 shows the specifications of four hydrometers P, Q, R and S

(ii)Determine the most suitable hydrometer to be used to measure the density of an acid solution.34. Section C: N9 08

[10 marks]Diagram 11.1 shows a machine controlled by a worker to dump soil. A hydraulic system helps to move the bucket containing soil.Long and smalllong and small stemstemGlass wallPlastics wallBulb of diameterBulb of diameter6 cm3 cmLead shootsvacuum

(a) What is meant by

pressure?[1 mark ](b)

Using a concept of pressure in liquid, explain why the hydraulic system in this machine is known as a force multiplier.[4 marks]Short and smallshort and smallStemstemGlass wallAluminium wallBulb of diameterBulb of diameter6 cm3 cmVacuumLead shootsYou are asked to measure the density of an acid solution.(i)Study hydrometers P, Q,R and S in diagram 11.2 and explain the suitability of each features to determine the density of acid solution

(c)

Diagram 11.2 shows a hydraulic jack lifting the back portion of the car.Table 11.3 shows four type of liquid, K, L, M, and N, with differentspecifications. You are required to determine the most suitable liquid that can be used as a hydraulic fluid in the hydraulic jack. Study the specificaof all the four types of liqiud from t following aspects:i)Boiling point of the liquidii) Specific heat capacity of liqui iii) Density of liquidiv) Rate of vaporation of liquid[10 marks] (d)A man of mass 60 kg walks onsnow wearing snow shoes. His feet will sink into the snow if the pressure exerted exceeds 500 Pa.(i) What is the weight of the man? (ii) Calculate the minimum area of each snow shoe so that he willnot sink into the snow.

Hot air balloon P Small balloon, volume = 800 m3Hot air balloon Q Large balloon Volume: 2500 m3

Features- Type of ballon fabric:Features- Type of ballon fabric:Synthetic nylon- Temperature of flame: 120C[5 marks]35. Section C: Kedah 08(a) (i) State Archimedess principle.[1 mark](ii) Explain why a balloon filled helium gas rises up in the air[4 mar(b) Diagram 11.1 shows four hot air balloon, P,Q, R and S with differ textures. You are required to determine the most suitable hot balloon which is able to carry th or four people to a higher altituda shorter time. Study the features of all the four hot air balloons from the following aspects:-The size of the balloon-The number of the burners-The type of the fabric of the balloon-The temperature of the air in balloon.Explain the suitability of the aspJustify your choice.

Hot air balloon R Large balloon Volume: 2500 m3Hot air balloon S Small balloon Volume: 800 m3

Features- Type of ballon fabric:Features- Type of ballon fabric:Canvas[10 marks](c) Diagram 11.3 shows a cylindrical glass tube of uniform cross sectional area of2 cm2. The glass tube contains lead shots and floats upright in water.

The density of water is 1 g cm-3(i)Calculate the total mass of the glass tube and the lead shots.(ii)The tube is then placed in another liquid of different density. Determine the minimum density of liquid for the tube to float in it.

36. Quatitative problem: SBP 07Diagram 11.3 shows a boat which has a safety limit line, L. The volume of the boat under the line L is 4 m3. The mass of the boat is 250 kg.[density of water : 1000 kgm-3]Diagram(i)Calculate the volume of water displaced by the boat.(ii) What is the maximum load that can be carried safely by the boat?[ 5 marks][5 marks][

5

m ar

(iii) state the relationshi pressure at W and th

pressure

(b) Based on the answers in

and 5(a)(iii), write words

that relate between the

atmospheric pressure, m pressure and the gas pre

E

oating

Type of tract or

Characteristics of tractorsSize of

tyrePhysic

al state of fluids

used in hydrau licMassBase

areaCent

re of gravi ty

system

M

Large

Liquid

Large

Large

Low

N

Large

Liquid

Large

Large

High

P

Large

Gas

Large

Small

High

Q

Mediu m

Liquid

Large

Mediu m

Low

R

Large

Liquid

Large

Mediu m

High

Hydrometer

Type of material of hydroeter

Diameter of capillary tube/ cm

Density of shots/ kgm-3

Diameter of bottom bulb/ cmLPlastic0.510001.0MPlastic2.013003.0NGlass0.598003.0OGlass2.080001.0

ects.

- Temperature

theof flame: 80 C

air

ree

e in

of flame: 60 C

ent

withCanvas

.

ks]- Temperature

of flame: 100 C

d

tionsSynthetic

henylon

- Temperature