人教版高中物理选修1-1高二上学期期末考试物理(中澳班)试题(无答案)

高中物理学习材料（灿若寒星**整理制作）1、Figure 1 shows a view of a simple tent. It has been pitched using a centre pole on the inside and three ropes on the outside. The ropes are shown as dashed lines.The ropes are all of equal length and all make an angle of 45° with the vertical centre pole.The force that the ground exerts on each of the ropes is equal to 100 N. The pole and ropes can be considered to have no mass.a. Is the pole in tension or in compression?b. What’s the magnitude of the force in the centre pole?Use the following information to answer Questions 2–7.Cylindrical samples of four different metal alloys – Alloy A, Alloy B, Alloy C and Alloy D – are placed in a stress tester and extended under tension to test their properties. A sketch of the apparatus is shown in Figure 2.The initial length of each sample in the stress tester was 20 cm (0.20 m) and each sample had a cross-sectional area of 2.0 × 10–3m2.The results of the stress tests are shown in Figure 3.2、What’s the value of Young’s mod ulus of the stiffest alloy?3、When Alloy B is stressed to 250 MPa, what’s the magnitude of the force applied to the sample?4、Which alloy shows elastic behaviour over the greatest range of strain values?A. Alloy AB. Alloy BC. Alloy CD. Alloy D5、Which alloy shows plastic behaviour over the greatest range of stress values?A. Alloy AB. Alloy BC. Alloy CD. Alloy D6、Which alloy would be described as the toughest?A. Alloy AB. Alloy BC. Alloy CD. Alloy D7、The initial length of each sample in the stress tester was 20 cm (0.20 m) and each sample had a cross-sectional area of 2.0 × 10–3m. What’s the value of the total energy required to strain Alloy C to a strain of 0.024?Use the following information to answer Questions 8 and 9The cantilever roof has a mass of 12 000 kg and is attached by a securing bolt to an anchor structure that is embedded firmly in the ground.The cantilever roof has uniform thickness and density, and is also supported (as shown) 40 m from its free end.Figure 4 shows the situation from the side.8、What’s the magnitude of the force that the support exerts on the cantilever roof ?9、What’s the magnitude of the force with which the anchor structure is pulling downward on the cantilever roof ?10、Igloos are temporary structures that can be made from blocks of compacted snow.These blocks of snow are very weak in tension, yet it is possible to build a strong and stable igloo usingthem, provided the igloos are shaped as arches (or domes, which can be considered as a collection of arches). Figure 5 shows a cross-section of a strong and stable igloo.Which of the following statements best describes why it is possible to build a strong and stable structure from material that is so weak in tension?A.Although s now is very weak in tension, its Young’s modulus under tension is high enough to support thestructure.B.The arch shape and the force of gravity ensure that the blocks of snow are always in compression, andsnow is strong in compression.C.Strong and stable igloos can only be built when reinforcing material is included in the snow blocks,forming a strong composite material.D.Although snow blocks are weak in tension they are strong under shear stresses, thus suitable for the task.11、The following diagrams show combinations of forces (as arrows) acting in various places on a solid cube.Which diagram best illustrates combinations of forces that provide a shear stress?12、A 300 kg steel beam is supported so that it is in compression on the top surface and in tension on the bottom surface as shown in Figure 6.Which of the following methods of support will achieve this?A.The beam is clamped firmly at its left-hand end. There is an additional force of 3000 N acting as shown.B.The beam is clamped at its left-hand end.C.The beam rests freely on two supports.D.The beam rests freely on one central support.Use the following information to answer Questions 13 and 14.Two identical bar magnets of the same strength are arranged at right angles and are equidistant from point P, as shown in Figure below.13、At point P on the diagram, draw an arrow indicating the direction of the combined magnetic field of bar magnets. Ignore Earth’s magnetic field.14、The bar magnets are replaced by two weaker magnets. The two new magnets are identical to each other. They are arranged at right angles and are equidistant from point P.The magnitude of the magnetic field of a single bar magnet at point P is the same as the magnitude of the magnetic field of Earth at point P. The direction of Earth’s magnetic field is shown in figure below.At point P on the diagram, draw an arrow indicating the direction of the combined magnetic field of bar magnets and Earth.15、Draw three magnetic field lines, with arrows to show direction, to indicate the magnetic field produced both inside and outside the solenoid.The following information applies to questions 16–18.The diagram below shows a conductor m with its axis perpendicular to the plane of the page. the local magnetic field strength of the earth is 5.0 ×10–5T. A current, I, flowing through the conductor produces a magnetic field of magnitude 50 µT at a distance R.16、In which direction (into or out of the page) would the current need to be flowing through this conductor for it to produce the following field directions at the points specified?a east at Ab south at D17、What is the magnitude and direction of the magnetic field produced by this conductor at point B, if the resultant field at this point is zero? What is the direction of the electric current responsible for producing this field?18、What is the magnitude and direction of the resultant magnetic field at point B for a current, I, flowing through this conductor out of the page?19、The following diagram shows a cross-sectional view of two long parallel conductors, m and n, each carrying currents of equal magnitude I into the page.a At which of the points Q, R and S, could the resultant magnetic field due to the currents and the Earth be zero?b what is the direction of the magnetic force on conductor n due to the field produced by conductor m?20、The diagram below depicts cross-sectional views of three long, straight, current-carrying conductors, each located between the poles of a permanent magnet. The magnetic field, B, of these magnets, and thecurrents, I,are mutually perpendicular in all cases. For diagram below, calculate the magnitude and direction of the magnetic force on a 5.0 cm section of conductor with I= 2.0 A into the page, and B= 2.0 ×10–3T.The following information relates to Questions 21–5.A rectangular loop of wire, PQRS, of sides PQ = 4.0 cm and QR = 8.0 cm, is placed inside the solenoid as shown in Figure below. The loop has 3 turns of wire. A current of 4.0 amps flows in the loop, in the direction indicated by the arrow. The uniform magnetic field strength inside the solenoid is 5.0 × 10–2T.21、Draw an arrow on Figure to indicate the direction of the force on the side PQ. What is the magnitude of the force on the side PQ? Show your working.22、What is the force (magnitude and direction) on the side QR?23、the following diagrams (a) and (b) show two different electron beams being bent as they pass through two different regions of uniform magnetic field of equal magnitudes B x and B y. The initial velocities of the electrons in the respective beams are v1and v2.Which of the following is correct?A v1= v2,B x into the pageB v1= v2,B y into the pageC v2> v1, B y into the pageD v2< v1,B y out of the page24、The following diagram shows the paths taken by three different particles, X, Y and Z, as they pass through a uniform magnetic field.Which of the following could be correct?A X is a proton, Y is an electron, Z is a neutron.B X is an electron, Y is a neutron, Z is a proton.C X is a proton, Y is a neutron, Z is an electron.The following information applies to questions 25–26.The diagram shows a simplified version of a direct current motor.25、For the position of the coil shown, calculate the magnitude of the force on segment WY when a current of 1.0 aflows through the coil.26、In which direction will the coil begin to rotate?精品试卷推荐下载。