AQA PHYA5 2c QP JUN14

Vật lý A level: AQA PHYA5 2c QP JUN12

Vật lý A level: AQA PHYA5 2c QP JUN12
... Calculate the pressure of the air in the barrel at the instant the cork is expelled Assume that the air is compressed adiabatically adiabatic index, γ, for air = 1.4 answer = Pa (2 marks) ... marks) (a) (ii) Calculate the maximum temperature reached by the air in the gun Give your answer to an appropriate number of significant figures answer = K (3 marks) (02) WMP /Jun12 /PHYA5/ 2C Do ... cutting a piece of wood A constant frictional torque of 1.2 N m acts at the bearings of the motor and axle Figure saw blade wood 32 N 0.15 m casing and guard not shown safety brake A horizontal force...
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Vật lý A level: AQA PHYA5 1 QP JUN12

Vật lý A level: AQA PHYA5 1 QP JUN12
... rock sample at time t was 2.0 × 10 22 92 (1 mark) (c) (iii) Calculate t in years answer = years (3 marks) 10 Turn over (05) ᮣ WMP /Jun12 /PHYA5/ 1 Do not write outside the box (a) In a radioactivity ... (10 ) WMP /Jun12 /PHYA5/ 1 Do not write outside the box 11 (6 marks) END OF SECTION A 11 (11 ) WMP /Jun12 /PHYA5/ 1 12 There are ... through the heater at a rate of 0 .12 kg s 1 as shown in Figure Figure electrical immersion heater water flowing at 0 .12 kg per second mass of water in heating chamber = 0. 41 kg (a) Assuming all the...
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Vật lý A level: AQA PHYA5 2a QP JUN12

Vật lý A level: AQA PHYA5 2a QP JUN12
... a real object Label a principal focus on your diagram (2 marks) (a) (ii) Draw a ray diagram to show how a converging lens forms a magnified virtual image of a real object Label a principal focus ... years from Earth The exoplanet has an elliptical orbit, whose orbital radius varies from AU to AU Calculate the maximum angular separation of the star and the planet when viewed from a distance of ... mark) 10 (08) WMP /Jun12 /PHYA5/ 2A Do not write outside the box Cygnus A may be the nearest quasar yet discovered (a) Cygnus A has a redshift, z, of 0.057 Calculate the distance to Cygnus A State...
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Vật lý A level: AQA PHYA5 2b QP JUN12

Vật lý A level: AQA PHYA5 2b QP JUN12
... target anode (a) (i) Calculate the kinetic energy of an electron as it reaches the anode Give your answer to an appropriate number of significant figures answer = J (2 marks) (a) (ii) Assuming ... through a clad optical fibre which has a core of refractive index 1.50 Figure Air Cladding Core A Cladding B C Air D Complete the graph below to show how the refractive index changes with the radial ... displayed 60 dB as the reading when the frequency of the sound was kHz (a) (i) State and explain what the reading would be for a sound of frequency kHz if the meter was changed to the dBA scale...
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Vật lý A level: AQA PHYA5 2c w QPE JUN11

Vật lý A level: AQA PHYA5 2c w QPE JUN11
... performance of the heat pump is 3.2 and the average electrical power input is 780 W (a) (i) Calculate the rate at which energy is delivered to the workshop answer = W (1 mark) (a) (ii) Calculate ... marks) (04) WMP /Jun11 /PHYA5/ 2C Do not write outside the box (b) A KERS flywheel has a moment of inertia of 0.036 kg m2 and rotates at its maximum angular speed of 6400 rad s–1 When the flywheel ... energy transferred from the flywheel to the car answer = J (1 mark) (b) (ii) Calculate the average power produced by the decelerating flywheel answer = W (1 mark) (b) (iii) Calculate the...
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Vật lý A level: AQA PHYA5 2d QP JUN12

Vật lý A level: AQA PHYA5 2d QP JUN12
... WMP /Jun12 /PHYA5/ 2D Do not write outside the box (a) Light has a dual wave-particle nature State and outline a piece of evidence for the wave nature of light and a piece of evidence for its particle ... particle nature For each piece of evidence, outline a characteristic feature that has been observed or measured and give a short explanation of its relevance to your answer Details of experiments are ... THIS PAGE ANSWER IN THE SPACES PROVIDED (11) WMP /Jun12 /PHYA5/ 2D 12 There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED Copyright © 2012 AQA and its...
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Vật lý A level: AQA PHYA5 1 w QP JUN11

Vật lý A level: AQA PHYA5 1 w QP JUN11
... (3 marks) Turn over (05) ᮣ WMP/Jun 11 /PHYA5/ 1 Do not write outside the box An electrical heater is placed in an insulated container holding 10 0 g of ice at a temperature of 14 oC The heater ... energy at a rate of 98 joules per second (a) After an interval of 30 s, all the ice has reached a temperature of oC Calculate the specific heat capacity of ice answer = J kg 1 K 1 (2 marks) ... box A fixed mass of ideal gas at a low temperature is trapped in a container at constant pressure The gas is then heated and the volume of the container changes so that the pressure stays at 1. 00...
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Vật lý A level: AQA PHYA5 2 a w QP JUN10

Vật lý A level: AQA PHYA5 2 a w QP JUN10
... chromatic aberration Draw a diagram to show how a single converging lens produces chromatic aberration (2 marks) Turn over for the next question Turn over (03) ᮣ WMP /Jun10 /PHYA5/ 2A Do not write ... (2 marks) ( 02) WMP /Jun10 /PHYA5/ 2A Do not write outside the box (b) (ii) The Triesnecker Crater on the Moon has a diameter of 23 km Calculate the angle subtended by the image of this crater when ... output of Sirius A power output of Sirius B ratio = (2 marks) (04) WMP /Jun10 /PHYA5/ 2A Do not write outside the box (b) (ii) Show that data in the table suggests that one star is about 8000 times...
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Vật lý A level: AQA PHYA5 2a w QP JUN11

Vật lý A level: AQA PHYA5 2a w QP JUN11
... problem of spherical aberration Draw a ray diagram to show how spherical aberration is caused by a concave spherical mirror (1 mark) (02) WMP /Jun11 /PHYA5/ 2A Do not write outside the box (b) (ii) ... the axes below draw the Hertzsprung-Russell (H-R) diagram, labelling the main sequence stars, giant stars and white dwarf stars Complete the vertical axis by labelling a suitable absolute magnitude ... ᮣ WMP /Jun11 /PHYA5/ 2A Do not write outside the box 10 Centaurus A is the nearest example of an active galactic nucleus Many astronomers believe a supermassive black hole at the centre of such a...
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Vật lý A level: AQA PHYA5 2 b w QP JUN10

Vật lý A level: AQA PHYA5 2 b w QP JUN10
... image of a < /b> real object by a < /b> diverging lens object F F (2 < /b> marks) (b) Define the power of a < /b> lens (1 mark) ( 02)< /b> WMP /Jun10 /PHYA5/< /b> 2B Do not write ... (3 marks) (04) WMP /Jun10 /PHYA5/< /b> 2B Do not write outside the box (c) The scale on the intensity meter is changed to the dBA scale and the new reading, for the same sound, is found to be 50 dBA Explain ... (7 marks) (06) WMP /Jun10 /PHYA5/< /b> 2B 10 Do not write outside the box (a)< /b> Outline the basic principles of a < /b> magnetic resonance (MR) scanner used to scan a < /b> patient’s brain ...
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Vật lý A level: AQA PHYA5 2b w QP JUN11

Vật lý A level: AQA PHYA5 2b w QP JUN11
... (2 marks) (b) A hearing test was used to obtain threshold hearing audiograms for several people The audiogram shown in Figure was obtained for a person with normal hearing On the same axes: ... (6 marks) (06) WMP /Jun11 /PHYA5/ 2B Do not write outside the box (b) Figure shows an ECG trace for a healthy person Figure R potential at body surface T P time / s (b) (i) Add a suitable scale and ... lens which will allow the person to have an aided near point 25 cm from the eye Complete the diagrams to show the passage of the rays to the retina You may assume that for the eye there is only a...
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Vật lý A level: AQA PHYA5 2 c w QP JUN10

Vật lý A level: AQA PHYA5 2 c w QP JUN10
... describe the process that occurs during each of the parts A to B, B to C, C to D and D to A of the cycle Describe whether heating or cooling is taking place, the type of process and whether work ... (iii) Calculate the new rotational kinetic energy of the roundabout and children answer = J (1 mark) (c) Explain where the increase of rotational kinetic energy of the roundabout and children ... children about the axis of rotation Give your answer to an appropriate number of significant figures answer = kg m2 (3 marks) (a) (ii) Calculate the total rotational kinetic energy of the roundabout...
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Vật lý A level: AQA PHYA5 2 d w QP JUN10

Vật lý A level: AQA PHYA5 2 d w QP JUN10
... PROVIDED (11) WMP /Jun10 /PHYA5/ 2D Do not write outside the box 12 There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED Copyright © 20 10 AQA and its ... mark) (b) A beam of identical particles moving at a speed of 0.98c is directed along a straight line between two detectors 25 m apart Figure first detector second detector beam of particles 25 ... WMP /Jun10 /PHYA5/ 2D Do not write outside the box When light of wavelength 590 nm is directed at an uncharged surface of a certain metal X, electrons are emitted from the metal surface causing a photoelectric...
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Vật lý A level: AQA PHYA5 2d w QP JUN11

Vật lý A level: AQA PHYA5 2d w QP JUN11
... (b) (i) The two horizontal parallel metal plates were mm apart The mass of the –15 droplet was × 10 kg The droplet was held stationary when the plate pd was 690 V Calculate the charge of the oil ... WMP /Jun11 /PHYA5/ 2D Do not write outside the box In an experiment to measure the charge of the electron, a charged oil droplet of unknown mass was observed between two horizontal parallel metal ... marks) (06) WMP /Jun11 /PHYA5/ 2D Do not write outside the box (b) Young demonstrated that a pattern of alternate bright and dark fringes was observed when light from a narrow single slit passed through...
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