... metal wire and asked to investigate how the resistance of the wire changes between ** a ** temperature of o C and 100 o C **(a)** (i) Draw ** a ** labelled diagram of ** a ** suitable arrangement that would enable the ... necessary for ** a ** photon to cause the ionisation of ** a ** hydrogen atom Give your answer to an appropriate number of significant figures answer Hz (4 marks) 12 **(a)** ** A ** student is given ** a ** piece of metal ... structure charge uud Sigma + uus strangeness baryon number +1 ud 0 (7 marks) (b) Each of the particles in the table has an antiparticle (b) (i) Give one example of ** a ** baryon particle and its corresponding...

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... resultant horizontal force is 155 kN, calculate the horizontal acceleration of the aircraft answer = m s–2 (2 marks) (b) (ii) State and explain one characteristic of the aircraft that limits ... and rider when at B Give your answer to an appropriate number of significant figures answer = J (2 marks) (04) WMP **/Jan12 ** **/PHYA2 ** Do not write outside the box **(a)** (iii) Calculate the gravitational ... J (2 marks) (f) ** A ** certain material has ** a ** Young modulus greater than copper and undergoes brittle fracture at ** a ** stress of 176 MPa On Figure draw ** a ** line showing the possible variation of stress...

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... in ** a ** distance of 35 m (b) (i) Calculate her average acceleration over this distance answer = .m s–2 (2 marks) (b) (ii) Calculate the resultant force necessary to produce this acceleration answer ... in Figure Figure parallel 15 N series 15 N ** A ** load of 15 N is attached to each arrangement (b) (i) Calculate the extension for the parallel arrangement when the load is midway between the lower ... box Answer all questions in the spaces provided **(a)** (i) State two vector quantities vector quantity vector quantity **(a)** (ii) State two scalar quantities scalar quantity...

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... WMP **/Jan10 ** **/PHYA1 ** ** A ** **(a)** An unstable nucleus, Z X, can decay by emitting ** a ** β– particle **(a)** Areas outside the box will not be scanned for marking (i) What part of the atom is the same as ** a ** β– particle? ... (1 mark) **(a)** (ii) Calculate the total emf of the combination of cells answer = V (1 mark) (12) WMP **/Jan10 ** **/PHYA1 ** 13 Areas outside the box will not be scanned for marking **(a)** (iii) Calculate ... **(a)** (i) Calculate the peak voltage of the ac source answer = V (1 mark) **(a)** (ii) Calculate the rms voltage answer = V (1 mark) **(a)** (iii) Calculate the time period of the ac signal answer...

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... Unit ** PHYA1 ** Particles, Quantum Phenomena and Electricity Wednesday 12 January 2011 9.00 am to 10.15 am For this paper you must have: l ** a ** pencil and ** a ** ruler l ** a ** calculator l ** a ** Data and Formulae Booklet ... marked on your ability to: – use good English – organise information clearly – use specialist vocabulary where appropriate (JAN1 **1PHYA10** 1) WMP **/Jan11 ** **/PHYA1 ** PHYA1 Do not write outside the box Answer ... voltage answer = V (2 marks) (b) (ii) Calculate the average power dissipated in ** a ** lamp connected to the mains supply when the rms current is 0.26 ** A ** answer = ** W ** (1 mark) (08) WMP **/Jan11/** PHYA1...

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... (3 marks) (08) WMP **/Jun10 ** **/PHYA1 ** Do not write outside the box **(a)** ** A ** student wishes to investigate how the resistance of ** a ** thermistor changes with temperature **(a)** (i) Draw ** a ** labelled diagram of ** a ** ... (c) ** A ** filament lamp has ** a ** power rating of 36 ** W ** when there is ** a ** pd across its terminals of 12 V (c) (i) Calculate the resistance of the filament when the pd across its terminals is 12 V answer ... write outside the box When ** a ** clean metal surface in ** a ** vacuum is irradiated with ultraviolet radiation of ** a ** certain frequency, electrons are emitted from the metal **(a)** (i) Explain why the kinetic energy...

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... this equation for alpha decay ** A ** Z X→ Y + α (2 marks) (iii) Calculate the specific charge of an alpha particle, stating an appropriate unit answer = (4 marks) (04) WMP **/Jun11 ** **/PHYA1 ** Do not ... The K + kaon is ** a ** strange particle Give one characteristic of ** a ** strange particle that makes it different from ** a ** particle that is not strange (1 mark) (b) (ii) ... WMP **/Jun11 ** **/PHYA1 ** Do not write outside the box 16 **(a)** (ii) The resistors W, X, Y, and Z all have the same resistance Show that your answer to part **(a)** (i) is consistent with the resistance of each...

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... answer = degrees (2 marks) (06) WMP **/Jan10 ** **/PHYA2 ** Areas outside the box will not be scanned for marking (c) State and explain one reason why part B of the optical fibre is made as narrow as ... WMP **/Jan10 ** **/PHYA2 ** 12 Areas outside the box will not be scanned for marking Figure shows ** a ** cross-section through ** a ** step index optical fibre Figure Light ray in air ** A ** B ** A ** **(a)** (i) Name the parts ** A ** and ... velocity of zero at ** A ** and reaches ** a ** constant horizontal velocity at D as it leaves the racket The ball travels ** a ** horizontal distance of 0.68 m between D and G **(a)** (i) Show that the horizontal velocity...

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... that the time taken for the cannonball to reach the water surface after being fired from the cannon was 3.7 s Assume the air resistance was negligible (2 marks) (04) WMP **/Jan11 ** **/PHYA2 ** Do not write ... box Figure shows ** a ** stationary wave on ** a ** string The string is tied onto ** a ** thin metal bar at ** A ** and fixed at B ** A ** vibration generator causes the bar to oscillate at ** a ** chosen frequency clamp Figure 1.2 ... string metal bar oscillations ** A ** B Explain how ** a ** stationary wave is formed Then describe the key features of the stationary wave shown in Figure The quality of your written answer will be assessed...

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... Calculate the initial acceleration down the slope answer = m s-2 (2 marks) (c) In this experiment, the following data was obtained ** A ** graph of the data is shown below it time / pendulum swings ... front tyre at ** A ** State your answer to an appropriate number of significant figures answer = N (4 marks) (d) Calculate the vertical force that the road exerts on the rear tyre at B answer = ... investigation, the number of swings of ** a ** pendulum was used to time ** a ** trolley after it was released from rest ** A ** block was positioned to mark the distance that the trolley had travelled after ** a ** chosen...

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... average acceleration of the train answer = ms–2 (2 marks) **(a)** (ii) Calculate the average tension in the cable as the train is accelerated, stating an appropriate unit answer = (3 marks) ... to be taken and explain how they are used to find the wavelength of the light Discuss any necessary safety precautions and how you would arrange the apparatus to improve accuracy The quality of ... obtain his interference pattern screen candle (2 marks) (d) State two differences in the appearance of the pattern obtained with ** a ** laser and that produced by ** a ** white light source such as ** a ** candle...

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... ** a ** radius of ** 1.** 5 × ** 10** 8 km What is the Earth’s approximate speed? ** A ** B 5.0 × ** 10** 3 m s **1 ** C ** 1.** 0 × ** 10** 4 m s **1 ** D ** 1.** 5 × ** 10** 3 m s **1 ** 3.0 × ** 10** 4 m s **1 ** ** A ** particle moves in ** a ** circular path at constant speed Which ... at P ** A ** ** 10** 00 μF capacitor and ** a ** ** 10** μF capacitor are charged so that they store the same energy The pd across the ** 10** 00 μF capacitor is V1 and the pd across the other capacitor is V2 ( ) V1 What is ... surface of ** a ** planet of radius 2R and mass 2M? ** A ** B W –– C W D ** 13** W –– 2W The gravitational field strength on the surface of ** a ** planet orbiting ** a ** star is 8.0 N kg **1 ** If the planet and star have ** a ** similar...

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... conserved WMP **/Jan10 ** **/PHYA4/** ** 1 ** What is the angular speed of ** a ** point on the Earth’s equator? ** A ** B C D 7.3 × ** 10** –5 rad s **1 ** 4.2 × ** 10** –3 rad s **1 ** 2.6 × ** 10** **1 ** rad s **1 ** 15 rad s **1 ** Which one of the following does ... END OF QUESTIONS WMP **/Jan10 ** **/PHYA4/** ** 1 ** 10 There are no questions printed on this page WMP **/Jan10 ** **/PHYA4/** ** 1 ** **11 ** There are no questions printed on this page WMP **/Jan10 ** **/PHYA4/** ** 1 ** 12 There are no questions ... capacitor The reciprocal of the gradient equals the capacitance of the capacitor ** 19** An initially uncharged capacitor of capacitance ** 10** µF is charged by ** a ** constant current of 200 **A ** After what...

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