1、2209-6510 15 pagesM09/4/PHYSI/SPM/ENG/TZ1/XXTuesday 12 May 2009 (afternoon)Physicsstandard levelPaPer 1INSTRUCTIONS TO CANDIDATES Do not open this examination paper until instructed to do so. Answer all the questions. For each question, choose the answer you consider to be the best and indicate your
2、 choice on the answer sheet provided.45 minutes International Baccalaureate Organization 200922096510220965102209-6510 2 M09/4/PHYSI/SPM/ENG/TZ1/XX1. A volume is measured to be 52 mm3. This volume in m3isA. 5.2 103m3.B. 5.2 101m3.C. 5.2 101m3.D. 5.2 108m3.2. The masses and weights of different objec
3、ts are independently measured. The graph is a plot of weight versus mass that includes error bars.Weight / N504030201000 1.0 2.0 3.0 4.0 5.0Mass / kgThese experimental results suggest that theA. measurements show a significant systematic error but small random error.B. measurements show a significan
4、t random error but small systematic error. C. measurements are precise but not accurate.D. weight of an object is proportional to its mass.2209-6510 3 Turn overM09/4/PHYSI/SPM/ENG/TZ1/XX3. A skydiver jumped out of an airplane. On reaching a terminal speed of 60 m s1, she opened her parachute. Which
5、of the following describes her motion after opening her parachute?A. She went upwards for a short time, before falling to Earth at a speed of 60 m s1.B. She continued downwards at 60 m s1, but hit the ground with less force.C. She continued to fall but reached a new terminal speed of less than 60 m
6、s1.D. She went upwards for a short time, before falling to Earth at a speed of less than 60 m s1.4. The graph is a speed versus time graph for an object that is moving in a straight line.Speed / m s1201510500 1.0 2.0 3.0 4.0 Time / sThe distance travelled by the object during the first 4.0 seconds i
7、sA. 80 m.B. 40 m.C. 20 m.D. 5 m.2209-6510 4 M09/4/PHYSI/SPM/ENG/TZ1/XX5. The diagram shows a girl attempting (but failing) to lift a heavy suitcase of weight W. The magnitude of the vertical upwards pull of the girl on the suitcase is P and the magnitude of the vertical reaction of the floor on the
8、suitcase is R.Which equation correctly relates W, P and R?A. W = P + RB. W P + RC. W P + RD. W = P = R6. Objects A and B collide together. They end up joined together and stationary. During the collision, a force +F is exerted on object A by object B. According to Newtons third law, there will also
9、be a force of A. F acting on object B. B. F acting on object A.C. + F acting on object B.D. + F acting on object A.2209-6510 5 Turn overM09/4/PHYSI/SPM/ENG/TZ1/XX7. A lift (elevator) is operated by an electric motor. It moves between the 10thfloor and the 2ndfloor at a constant speed. One main energ
10、y transformation during this journey isA. gravitational potential energy kinetic energy.B. electrical energy kinetic energy. C. kinetic energy thermal energy.D. electrical energy thermal energy.8. A communications satellite is moving at a constant speed in a circular orbit around Earth. At any given
11、 instant in time, the resultant force on the satellite isA. zero.B. equal to the gravitational force on the satellite.C. equal to the vector sum of the gravitational force on the satellite and the centripetal force.D. equal to the force exerted by the satellites rockets.9. A temperature of 23 K is e
12、quivalent to a temperature of A. 300 C.B. 250 C.C. + 250 C.D. + 300 C.2209-6510 6 M09/4/PHYSI/SPM/ENG/TZ1/XX10. The ratiothermal capacity of a sample of copperspecific heat capacity of copperA. does not have any unit.B. has unit J kg1K1.C. has unit J kg1.D. has unit kg.11. In the kinetic model of an
13、 ideal gas, it is assumed thatA. the forces between the molecules of the gas and the container are always zero.B. the intermolecular potential energy of the molecules of the gas is constant.C. the kinetic energy of a given molecule of the gas is constant.D. the momentum of a given molecule of the ga
14、s is constant.2209-6510 Turn overM09/4/PHYSI/SPM/ENG/TZ1/XX12. Which graph correctly shows how the acceleration, a of a particle undergoing SHM varies with its displacement, x from its equilibrium position?A. B.C. D.axaaxx xa2209-6510 8 M09/4/PHYSI/SPM/ENG/TZ1/XX13. A mass on the end of a horizontal
15、 spring is displaced from its equilibrium position by a distance A and released. Its subsequent oscillations have total energy E and time period T.Mass SpringAFriction free surfaceAn identical mass is attached to an identical spring. The maximum displacement is 2A. Assuming this spring obeys Hookes
16、law, which of the following gives the correct time period and total energy? New time period New energyA. T 4EB. T 2EC.2T4ED.2T2E14. In which of the following regions of the electromagnetic spectrum is radiation of wavelength 600 nm located?A. microwavesB. radio wavesC. visible lightD. X-rays2209-651
17、0 9 Turn overM09/4/PHYSI/SPM/ENG/TZ1/XX15. What is the best estimate for the refractive index of a medium in which light travels at a speed of 2. 108m s1?A. 0.9B. 1.0C. 1.1D. 2.16. Two rectangular blocks, X and Y, of the same material have different dimensions but the same overall resistance. Which
18、of the following equations is correct?A. resistivity of X length of X = resistivity of Y length of Y B. length of cross sectional area of length of cross sectXXY=iional area of YC. resistivity of cross sectional area of resistivity ofX X = cross sectional area of Y YD. length of cross sectional area
19、 of length of cross sectXYY=iional area of X2209-6510 10 M09/4/PHYSI/SPM/ENG/TZ1/XX17. Two 6 resistors are connected in series with a 6 V cell. A student incorrectly connects an ammeter and a voltmeter as shown below.AV6V67 67The readings on the ammeter and on the voltmeter areAmmeter reading / A Vo
20、ltmeter reading / VA. 0.0 0.0B. 0.0 6.0C. 1.0 0.0D. 1.0 6.02209-6510 11 Turn overM09/4/PHYSI/SPM/ENG/TZ1/XX18. The diagram shows a potential divider circuit.3k7R12VVIn order to increase the reading on the voltmeter theA. temperature of R should be increased.B. temperature of R should be decreased.C.
21、 light intensity on R should be increased.D. light intensity on R should be decreased.19. The mass of Earth isME, its radius isREand the magnitude of the gravitational field strength at the surface of Earth is g. The universal gravitational constant is G. The ratio gGis equal toA. MREE2B. RMEE2C. ME
22、RED. 12209-6510 12 M09/4/PHYSI/SPM/ENG/TZ1/XX20. Which diagram best represents the electric field due to a negatively charged conducting sphere?A. B.C. D.21. A point mass carries a positive charge +Q and is at rest in a magnetic field. The field is in the direction shown.+QThe magnetic force acting
23、on the charge isA. from left to right in the plane of the page.B. from top to bottom in the plane of the page.C. into the plane of the page.D. zero.2209-6510 13 Turn overM09/4/PHYSI/SPM/ENG/TZ1/XX22. The number of neutrons and the number of protons in a nucleus of an atom of the isotope of uranium92
24、235U areNeutrons ProtonsA. 92 143B. 143 92C. 235 92D. 92 23523. A sample contains an amount of radioactive material with a half-life of 3.5 days. After 2 weeks the fraction of the radioactive material remaining isA. 94 %.B. 25 %.C. 6 %.D. 0 %.24. The rest mass of a proton is 938 MeV c2. The energy o
25、f a proton at rest is A. 9.38 JB. 9 38 10 3 108 8 2. ( ) JC. 9 38 108. eV.D. 9 38 10 3 108 8 2. ( ) eV2209-6510 14 M09/4/PHYSI/SPM/ENG/TZ1/XX25. The efficiency of a modern natural gas power station is approximatelyA. 10 %.B. 50 %.C. 5 %.D. 90 %.26. The energy source that currently provides the great
26、est proportion of the worlds total energy demand isA. coal.B. oil.C. natural gas.D. uranium.27. In a nuclear power station, uranium is used as the energy source and plutonium-239 is produced. Which of the following is true? A. Plutonium-239 is produced by nuclear fusion.B. A moderator is used to abs
27、orb plutonium-239.C. Control rods are used to slow down plutonium-239.D. Plutonium-239 can be used as a fuel in another type of nuclear reactor.28. One disadvantage of using photovoltaic cells to power a domestic water heater is thatA. solar energy is a renewable source of energy.B. the power radiat
28、ed by the Sun varies significantly depending on the weather.C. a large area of photovoltaic cells would be needed.D. photovoltaic cells contain CFCs, which contribute to the greenhouse effect. 2209-6510 15 M09/4/PHYSI/SPM/ENG/TZ1/XX29. Greenhouse gasesA. reflect infrared radiation but absorb ultravi
29、olet radiation.B. reflect ultraviolet radiation but absorb infrared radiation.C. transmit infrared radiation but absorb ultraviolet radiation.D. transmit ultraviolet radiation but absorb infrared radiation.30. The rate of global warming might be reduced byA. replacing the use of coal and oil with natural gas.B. a reduction in the Earths albedo.C. a reduction in carbon fixation.D. an increase in deforestation.
