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New York Regents Physics June 2015 Exam

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P.S./PHYSICS The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS Wednesday, June 17, 2015 1:15 to 4:15 p.m., only The possession or use of any communications device is strictly prohibited when taking this examination. If you have or use any communications device, no matter how briefly, your examination will be invalidated and no score will be calculated for you. Answer all questions in all parts of this examination according to the directions provided in the examination booklet. A separate answer sheet for Part A and Part B 1 has been provided to you. Follow the instructions from the proctor for completing the student information on your answer sheet. Record your answers to the Part A and Part B 1 multiple-choice questions on this separate answer sheet. Record your answers for the questions in Part B 2 and Part C in your separate answer booklet. Be sure to fill in the heading on the front of your answer booklet. All answers in your answer booklet should be written in pen, except for graphs and drawings, which should be done in pencil. You may use scrap paper to work out the answers to the questions, but be sure to record all your answers on your separate answer sheet or in your answer booklet as directed. When you have completed the examination, you must sign the statement printed on your separate answer sheet, indicating that you had no unlawful knowledge of the questions or answers prior to the examination and that you have neither given nor received assistance in answering any of the questions during the examination. Your answer sheet and answer booklet cannot be accepted if you fail to sign this declaration. Notice. . . A scientific or graphing calculator, a centimeter ruler, a protractor, and a copy of the 2006 Edition Reference Tables for Physical Setting/Physics, which you may need to answer some questions in this examination, must be available for your use while taking this examination. DO NOT OPEN THIS EXAMINATION BOOKLET UNTIL THE SIGNAL IS GIVEN. P.S./PHYSICS Part A Answer all questions in this part. Directions (1 35): For each statement or question, choose the word or expression that, of those given, best completes the statement or answers the question. Some questions may require the use of the 2006 Edition Reference Tables for Physical Setting/Physics. Record your answers on your separate answer sheet. 1 Which quantities are scalar? (1) speed and work (2) velocity and force (3) distance and acceleration (4) momentum and power 4 A 160.-kilogram space vehicle is traveling along a straight line at a constant speed of 800. meters per second. The magnitude of the net force on the space vehicle is (1) 0 N (3) 8.00 102 N (2) 1.60 102 N (4) 1.28 105 N 2 A 3.00-kilogram mass is thrown vertically upward with an initial speed of 9.80 meters per second. What is the maximum height this object will reach? [Neglect friction.] (1) 1.00 m (3) 9.80 m (2) 4.90 m (4) 19.6 m 5 A student throws a 5.0-newton ball straight up. What is the net force on the ball at its maximum height? (1) 0.0 N (3) 5.0 N, down (2) 5.0 N, up (4) 9.8 N, down 3 An airplane traveling north at 220. meters per second encounters a 50.0-meters-per-second crosswind from west to east, as represented in the diagram below. 6 A vertical spring has a spring constant of 100. newtons per meter. When an object is attached to the bottom of the spring, the spring changes from its unstretched length of 0.50 meter to a length of 0.65 meter. The magnitude of the weight of the attached object is (1) 1.1 N (3) 50. N (2) 15 N (4) 65 N 220. m/s 7 A 1.5-kilogram cart initially moves at 2.0 meters per second. It is brought to rest by a constant net force in 0.30 second. What is the magnitude of the net force? (1) 0.40 N (3) 10. N (2) 0.90 N (4) 15 N 50.0 m/s 8 Which characteristic of a light wave must increase as the light wave passes from glass into air? (1) amplitude (3) period (2) frequency (4) wavelength What is the resultant speed of the plane? (1) 170. m/s (3) 226 m/s (2) 214 m/s (4) 270. m/s P.S./Physics June 15 [2] 9 As a 5.0 102-newton basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floor is 1.0 103 newtons. As she jumps, the magnitude of the force of the floor on her feet is (1) 5.0 102 N (3) 1.5 103 N (2) 1.0 103 N (4) 5.0 105 N 15 A block slides across a rough, horizontal tabletop. As the block comes to rest, there is an increase in the block-tabletop system s (1) gravitational potential energy (2) elastic potential energy (3) kinetic energy (4) internal (thermal) energy 10 A 0.0600-kilogram ball traveling at 60.0 meters per second hits a concrete wall. What speed must a 0.0100-kilogram bullet have in order to hit the wall with the same magnitude of momentum as the ball? (1) 3.60 m/s (3) 360. m/s (2) 6.00 m/s (4) 600. m/s 16 How much work is required to move an electron through a potential difference of 3.00 volts? (1) 5.33 10 20 J (3) 3.00 J (2) 4.80 10 19 J (4) 1.88 1019 J 17 During a laboratory experiment, a student finds that at 20 Celsius, a 6.0-meter length of copper wire has a resistance of 1.3 ohms. The crosssectional area of this wire is (1) 7.9 10 8 m2 (3) 4.6 100 m2 7 2 (2) 1.1 10 m (4) 1.3 107 m2 11 The Hubble telescope s orbit is 5.6 105 meters above Earth s surface. The telescope has a mass of 1.1 104 kilograms. Earth exerts a gravitational force of 9.1 104 newtons on the telescope. The magnitude of Earth s gravitational field strength at this location is (1) 1.5 10 20 N/kg (3) 8.3 N/kg (2) 0.12 N/kg (4) 9.8 N/kg 18 A net charge of 5.0 coulombs passes a point on a conductor in 0.050 second. The average current is (1) 8.0 10 8 A (3) 2.5 10 1 A 2 (2) 1.0 10 A (4) 1.0 102 A 12 When two point charges are a distance d apart, the magnitude of the electrostatic force between them is F. If the distance between the point charges is increased to 3d, the magnitude of the electrostatic force between the two charges will be (1) 1 F (3) 2F 9 (2) 1 F (4) 4F 3 19 If several resistors are connected in series in an electric circuit, the potential difference across each resistor (1) varies directly with its resistance (2) varies inversely with its resistance (3) varies inversely with the square of its resistance (4) is independent of its resistance 20 The amplitude of a sound wave is most closely related to the sound s (1) speed (3) loudness (2) wavelength (4) pitch 13 A radio operating at 3.0 volts and a constant temperature draws a current of 1.8 10 4 ampere. What is the resistance of the radio circuit? (1) 1.7 104 (3) 5.4 10 4 (2) 3.0 101 (4) 6.0 10 5 21 A duck floating on a lake oscillates up and down 5.0 times during a 10.-second interval as a periodic wave passes by. What is the frequency of the duck s oscillations? (1) 0.10 Hz (3) 2.0 Hz (2) 0.50 Hz (4) 50. Hz 14 Which energy transformation occurs in an operating electric motor? (1) electrical mechanical (2) mechanical electrical (3) chemical electrical (4) electrical chemical P.S./Physics June 15 [3] [OVER] 22 Which diagram best represents the position of a ball, at equal time intervals, as it falls freely from rest near Earth s surface? (1) (3) (2) 26 As a longitudinal wave moves through a medium, the particles of the medium (1) vibrate parallel to the direction of the wave s propagation (2) vibrate perpendicular to the direction of the wave s propagation (3) are transferred in the direction of the wave s motion, only (4) are stationary 27 Wind blowing across suspended power lines may cause the power lines to vibrate at their natural frequency. This often produces audible sound waves. This phenomenon, often called an Aeolian harp, is an example of (1) diffraction (3) refraction (2) the Doppler effect (4) resonance (4) 28 A student listens to music from a speaker in an adjoining room, as represented in the diagram below. 23 A gamma ray and a microwave traveling in a vacuum have the same (1) frequency (3) speed (2) period (4) wavelength 24 A student produces a wave in a long spring by vibrating its end. As the frequency of the vibration is doubled, the wavelength in the spring is (1) quartered (3) unchanged (2) halved (4) doubled Doorway Speaker 25 Which two points on the wave shown in the diagram below are in phase with each other? Student She notices that she does not have to be directly in front of the doorway to hear the music. This spreading of sound waves beyond the doorway is an example of (1) the Doppler effect (3) refraction (2) resonance (4) diffraction A B C D E (1) A and B (2) A and E P.S./Physics June 15 (3) B and C (4) B and D 29 What is the minimum energy required to ionize a hydrogen atom in the n = 3 state? (1) 0.00 eV (3) 1.51 eV (2) 0.66 eV (4) 12.09 eV [4] Base your answers to questions 30 and 31 on the diagram below and on your knowledge of physics. The diagram represents two small, charged, identical metal spheres, A and B that are separated by a distance of 2.0 meters. 2.0 m A B 6 1.6 10 6 C +1.0 10 C 30 What is the magnitude of the electrostatic force exerted by sphere A on sphere B? (1) 7.2 10 3 N (3) 8.0 10 13 N 3 (2) 3.6 10 N (4) 4.0 10 13 N 31 If the two spheres were touched together and then separated, the charge on sphere A would be (3) 1.3 10 6 C (1) 3.0 10 7 C 7 (2) 6.0 10 C (4) 2.6 10 6 C 32 The horn of a moving vehicle produces a sound of constant frequency. Two stationary observers, A and C, and the vehicle s driver, B, positioned as represented in the diagram below, hear the sound of the horn. B A C v Compared to the frequency of the sound of the horn heard by driver B, the frequency heard by observer A is (1) lower and the frequency heard by observer C is lower (2) lower and the frequency heard by observer C is higher (3) higher and the frequency heard by observer C is lower (4) higher and the frequency heard by observer C is higher 33 A different force is applied to each of four different blocks on a frictionless, horizontal surface. In which diagram does the block have the greatest inertia 2.0 seconds after starting from rest? 5.0 kg 10. N (1) 10. kg (2) P.S./Physics June 15 15 kg 3.0 N (3) 5.0 N 20. kg 2.0 N (4) [5] [OVER] 34 The diagram below shows a ray of monochromatic light incident on a boundary between air and glass. Normal A Incident ray B Air Glass C D Which ray best represents the path of the reflected light ray? (1) A (3) C (2) B (4) D 35 Two pulses approach each other in the same medium. The diagram below represents the displacements caused by each pulse. Which diagram best represents the resultant displacement of the medium as the pulses pass through each other? (1) (2) P.S./Physics June 15 (3) (4) [6] Part B 1 Answer all questions in this part. Directions (36 50): For each statement or question, choose the word or expression that, of those given, best completes the statement or answers the question. Some questions may require the use of the 2006 Edition Reference Tables for Physical Setting/Physics. Record your answers on your separate answer sheet. 39 A car is moving with a constant speed of 20. meters per second. What total distance does the car travel in 2.0 minutes? (1) 10. m (3) 1200 m (2) 40. m (4) 2400 m 36 The diameter of an automobile tire is closest to (3) 101 m (1) 10 2 m 0 (2) 10 m (4) 102 m 37 The vector diagram below represents the velocity of a car traveling 24 meters per second 35 east of north. 40 A car, initially traveling at 15 meters per second north, accelerates to 25 meters per second north in 4.0 seconds. The magnitude of the average acceleration is (1) 2.5 m/s2 (3) 10. m/s2 2 (2) 6.3 m/s (4) 20. m/s2 N 41 An object is in equilibrium. Which force vector diagram could represent the force(s) acting on the object? 35 W E (1) (3) (2) (4) S What is the magnitude of the component of the car s velocity that is directed eastward? (1) 14 m/s (3) 29 m/s (2) 20. m/s (4) 42 m/s 38 Without air resistance, a kicked ball would reach a maximum height of 6.7 meters and land 38 meters away. With air resistance, the ball would travel (1) 6.7 m vertically and more than 38 m horizontally (2) 38 m horizontally and less than 6.7 m vertically (3) more than 6.7 m vertically and less than 38 m horizontally (4) less than 38 m horizontally and less than 6.7 m vertically P.S./Physics June 15 42 Which combination of fundamental units can be used to express the amount of work done on an object? (1) kg m/s (3) kg m2/s2 (2) kg m/s2 (4) kg m2/s3 [7] [OVER] Force Exerted (N) 48 The graph below represents the relationship between the force exerted on an elevator and the distance the elevator is lifted. Potential Energy Potential Energy 43 Which graph best represents the relationship between the potential energy stored in a spring and the change in the spring s length from its equilibrium position? Change in Length (1) (3) Potential Energy Potential Energy Change in Length Change in Length (4) 3.0 6.0 9.0 Distance Lifted (m) B A 45 A compressed spring in a toy is used to launch a 5.00-gram ball. If the ball leaves the toy with an initial horizontal speed of 5.00 meters per second, the minimum amount of potential energy stored in the compressed spring was (1) 0.0125 J (3) 0.0625 J (2) 0.0250 J (4) 0.125 J Compared to wave A, wave B has (1) twice the amplitude and twice the wavelength (2) twice the amplitude and half the wavelength (3) the same amplitude and half the wavelength (4) half the amplitude and the same wavelength 46 A ray of yellow light ( f = 5.09 1014 Hz) travels at a speed of 2.04 108 meters per second in (1) ethyl alcohol (3) Lucite (2) water (4) glycerol P.S./Physics June 15 0.0 49 The diagram below shows waves A and B in the same medium. 44 An electric motor has a rating of 4.0 102 watts. How much time will it take for this motor to lift a 50.-kilogram mass a vertical distance of 8.0 meters? [Assume 100% efficiency.] (1) 0.98 s (3) 98 s (2) 9.8 s (4) 980 s 47 A blue-light photon has 4.80 10 7 meter. What is photon? (1) 1.86 1022 J (3) 2 (2) 1.44 10 J (4) 1.0 104 How much total work is done by the force in lifting the elevator from 0.0 m to 9.0 m? (1) 9.0 104 J (3) 1.5 105 J 5 (2) 1.2 10 J (4) 1.8 105 J Change in Length (2) 2.0 104 50 What is the quark composition of a proton? (1) uud (3) csb (2) udd (4) uds a wavelength of the energy of the 4.14 10 19 J 3.18 10 26 J [8] Part B 2 Answer all questions in this part. Directions (51 65): Record your answers in the spaces provided in your answer booklet. Some questions may require the use of the 2006 Edition Reference Tables for Physical Setting/Physics. 51 52 Calculate the minimum power output of an electric motor that lifts a 1.30 104-newton elevator car vertically upward at a constant speed of 1.50 meters per second. [Show all work, including the equation and substitution with units.] [2] 53 54 A microwave oven emits a microwave with a wavelength of 2.00 10 2 meter in air. Calculate the frequency of the microwave. [Show all work, including the equation and substitution with units.] [2] 55 56 Calculate the energy equivalent in joules of the mass of a proton. [Show all work, including the equation and substitution with units.] [2] Base your answers to questions 57 through 59 on the information and diagram below and on your knowledge of physics. A 1.5 103-kilogram car is driven at a constant speed of 12 meters per second counterclockwise around a horizontal circular track having a radius of 50. meters, as represented below. Direction of car s motion 50. m Track, as Viewed from Above 57 On the diagram in your answer booklet, draw an arrow to indicate the direction of the velocity of the car when it is at the position shown. Start the arrow on the car. [1] 58 59 Calculate the magnitude of the centripetal acceleration of the car. [Show all work, including the equation and substitution with units.] [2] P.S./Physics June 15 [9] [OVER] Base your answers to questions 60 through 62 on the information below and on your knowledge of physics. A football is thrown at an angle of 30. above the horizontal. The magnitude of the horizontal component of the ball s initial velocity is 13.0 meters per second. The magnitude of the vertical component of the ball s initial velocity is 7.5 meters per second. [Neglect friction.] 60 On the axes in your answer booklet, draw a graph representing the relationship between the horizontal displacement of the football and the time the football is in the air. [1] 61 62 The football is caught at the same height from which it is thrown. Calculate the total time the football was in the air. [Show all work, including the equation and substitution with units.] [2] Base your answers to questions 63 through 65 on the information and diagram below and on your knowledge of physics. A ray of light ( f = 5.09 1014 Hz) traveling through a block of an unknown material, passes at an angle of incidence of 30. into air, as shown in the diagram below. Normal 30. Unknown material Air 63 Use a protractor to determine the angle of refraction of the light ray as it passes from the unknown material into air. [1] 64 65 Calculate the index of refraction of the unknown material. [Show all work, including the equation and substitution with units.] [2] P.S./Physics June 15 [10] Part C Answer all questions in this part. Directions (66 85): Record your answers in the spaces provided in your answer booklet. Some questions may require the use of the 2006 Edition Reference Tables for Physical Setting/Physics. Base your answers to questions 66 through 70 on the information below and on your knowledge of physics. The diagram below represents a 4.0-newton force applied to a 0.200-kilogram copper block sliding to the right on a horizontal steel table. v Copper block 0.200 kg 4.0 N Horizontal steel table 66 Determine the weight of the block. [1] 67 68 Calculate the magnitude of the force of friction acting on the moving block. [Show all work, including the equation and substitution with units.] [2] 69 Determine the magnitude of the net force acting on the moving block. [1] 70 Describe what happens to the magnitude of the velocity of the block as the block slides across the table. [1] P.S./Physics June 15 [11] [OVER] Base your answers to questions 71 through 75 on the information and diagram below and on your knowledge of physics. Two conducting parallel plates 5.0 10 3 meter apart are charged with a 12-volt potential difference. An electron is located midway between the plates. The magnitude of the electrostatic force on the electron is 3.8 10 16 newton. + + + + + + + + + + e- 71 On the diagram in your answer booklet, draw at least three field lines to represent the direction of the electric field in the space between the charged plates. [1] 72 Identify the direction of the electrostatic force that the electric field exerts on the electron. [1] 73 74 Calculate the magnitude of the electric field strength between the plates, in newtons per coulomb. [Show all work, including the equation and substitution with units.] [2] 75 Describe what happens to the magnitude of the net electrostatic force on the electron as the electron is moved toward the positive plate. [1] Base your answers to questions 76 through 80 on the information below and on your knowledge of physics. An electron in a mercury atom changes from energy level b to a higher energy level when the atom absorbs a single photon with an energy of 3.06 electronvolts. 76 Determine the letter that identifies the energy level to which the electron jumped when the mercury atom absorbed the photon. [1] 77 Determine the energy of the photon, in joules. [1] 78 79 Calculate the frequency of the photon. [Show all work, including the equation and substitution with units.] [2] 80 Classify the photon as one of the types of electromagnetic radiation listed in the electromagnetic spectrum. [1] P.S./Physics June 15 [12] Base your answers to questions 81 through 85 on the information and circuit diagram below and on your knowledge of physics. Three lamps are connected in parallel to a 120.-volt source of potential difference, as represented below. 120.-V source 40. W 60. W 100. W 81 82 Calculate the resistance of the 40.-watt lamp. [Show all work, including the equation and substitution with units.] [2] 83 Describe what change, if any, would occur in the power dissipated by the 100.-watt lamp if the 60.-watt lamp were to burn out. [1] 84 Describe what change, if any, would occur in the equivalent resistance of the circuit if the 60.-watt lamp were to burn out. [1] 85 The circuit is disassembled. The same three lamps are then connected in series with each other and the source. Compare the equivalent resistance of this series circuit to the equivalent resistance of the parallel circuit. [1] P.S./Physics June 15 [13] The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS Wednesday, June 17, 2015 1:15 to 4:15 p.m., only ANSWER BOOKLET Student . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Male Sex: Female Teacher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . School . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grade . . . . . . . . . Record your answers for Part B 2 and Part C in this booklet. Part B 2 51 52 53 54 55 56 P.S./Physics Answer Booklet June 15 [2] 57 Direction of car s motion 50. m Track, as Viewed from Above 58 59 Horizontal Displacement 60 Time P.S./Physics Answer Booklet June 15 [3] [OVER] 61 62 63 _______________________ 64 65 P.S./Physics Answer Booklet June 15 [4] Part C 66 _______________________ N 67 68 69 _______________________ N 70 71 + + + + + + + + + + e- 72 ___________________________________ P.S./Physics Answer Booklet June 15 [5] [OVER] 73 74 75 76 _______________________ 77 _______________________ J 78 79 80 _______________________ P.S./Physics Answer Booklet June 15 [6] 81 82 83 84 85 P.S./Physics Answer Booklet June 15 [7] FOR TEACHERS ONLY The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PS P PHYSICAL SETTING/PHYSICS Wednesday, June 17, 2015 1:15 to 4:15 p.m., only SCORING KEY AND RATING GUIDE Directions to the Teacher: Refer to the directions on page 2 before rating student papers. Updated information regarding the rating of this examination may be posted on the New York State Education Department s web site during the rating period. Check this web site at: http://www.p12.nysed.gov/assessment/ and select the link Scoring Information for any recently posted information regarding this examination. This site should be checked before the rating process for this examination begins and several times throughout the Regents Examination period. Part A and Part B 1 Allow 1 credit for each correct response. Part A 1 ......1...... 10 . . . . . . 3 . . . . . . 19 . . . . . . 1 . . . . . . 28 . . . . . . 4 . . . . . . 2 ......2...... 11 . . . . . . 3 . . . . . . 20 . . . . . . 3 . . . . . . 29 . . . . . . 3 . . . . . . 3 ......3...... 12 . . . . . . 1 . . . . . . 21 . . . . . . 2 . . . . . . 30 . . . . . . 2 . . . . . . 4 ......1...... 13 . . . . . . 1 . . . . . . 22 . . . . . . 2 . . . . . . 31 . . . . . . 1 . . . . . . 5 ......3...... 14 . . . . . . 1 . . . . . . 23 . . . . . . 3 . . . . . . 32 . . . . . . 2 . . . . . . 6 ......2...... 15 . . . . . . 4 . . . . . . 24 . . . . . . 2 . . . . . . 33 . . . . . . 4 . . . . . . 7 ......3...... 16 . . . . . . 2 . . . . . . 25 . . . . . . 4 . . . . . . 34 . . . . . . 1 . . . . . . 8 ......4...... 17 . . . . . . 1 . . . . . . 26 . . . . . . 1 . . . . . . 35 . . . . . . 2 . . . . . . 9 ......2...... 18 . . . . . . 4 . . . . . . 27 . . . . . . 4 . . . . . . Part B 1 36 . . . . . . 2 . . . . . . 40 . . . . . . 1 . . . . . . 44 . . . . . . 2 . . . . . . 48 . . . . . . 3 . . . . . . 37 . . . . . . 1 . . . . . . 41 . . . . . . 4 . . . . . . 45 . . . . . . 3 . . . . . . 49 . . . . . . 2 . . . . . . 38 . . . . . . 4 . . . . . . 42 . . . . . . 3 . . . . . . 46 . . . . . . 4 . . . . . . 50 . . . . . . 1 . . . . . . 39 . . . . . . 4 . . . . . . 43 . . . . . . 1 . . . . . . 47 . . . . . . 3 . . . . . . Directions to the Teacher Follow the procedures below for scoring student answer papers for the Physical Setting/Physics examination. Additional information about scoring is provided in the publication Information for Scoring Regents Examinations in the Sciences, which may be found on the Department web site at http://www.p12.nysed.gov/assessment/science/science-hs.html. Do not attempt to correct the student s work by making insertions or changes of any kind. If the student s responses for the multiple-choice questions are being hand scored prior to being scanned, the scorer must be careful not to make any marks on the answer sheet except to record the scores in the designated score boxes. Marks elsewhere on the answer sheet will interfere with the accuracy of the scanning. For Part A and Part B 1, indicate by means of a check mark each incorrect or omitted answer. In the box provided at the end of each part, record the number of questions the student answered correctly for that part. At least two science teachers must participate in the scoring of each student s responses to the Part B 2 and Part C open-ended questions. Each of these teachers should be responsible for scoring a selected number of the open-ended questions on each answer paper. No one teacher is to score more than approximately one-half of the open-ended questions on a student s answer paper. Teachers may not score their own students answer papers. Students responses must be scored strictly according to the Scoring Key and Rating Guide. For open-ended questions, credit may be allowed for responses other than those given in the rating guide if the response is a scientifically accurate answer to the question and demonstrates adequate knowledge as indicated by the examples in the rating guide. Fractional credit is not allowed. Only whole-number credit may be given to a response. Units need not be given when the wording of the questions allows such omissions. Raters should enter the scores earned for Part A, Part B 1, Part B 2, and Part C on the appropriate lines in the box printed on the answer booklet, and then should add these four scores and enter the total in the box labeled Total Written Test Score. Then, the student s raw score on the written test should be converted to a scale score by using the conversion chart that will be posted on the Department s web site at: http://www.p12.nysed.gov/assessment/ on Wednesday, June 17, 2015. The student s scale score should be entered in the labeled box on the student s answer booklet. The scale score is the student s final examination score. On the front of the student s answer booklet, raters must enter their initials on the lines next to Rater 1 or Rater 2. Schools are not permitted to rescore any of the open-ended questions on this exam after each question has been rated once, regardless of the final exam score. Schools are required to ensure that the raw scores have been added correctly and that the resulting scale score has been determined accurately. Because scale scores corresponding to raw scores in the conversion chart may change from one administration to another, it is crucial that for each administration, the conversion chart provided for that administration be used to determine the student s final score. P.S./Physics Rating Guide June 15 [2] Teachers should become familiar with the Department publication Regents Examination in Physical Setting/Physics: Rating Guide for Parts B 2 and C. This publication can be found on the New York State Education Department web site http://www.p12.nysed.gov/assessment/science/phyratg02.pdf. This guide provides a set of directions, along with some examples, to assist teachers in rating parts B 2 and C of the Regents Examination in Physical Setting/Physics. Scoring Criteria for Calculations For each question requiring the student to show all calculations, including the equation and substitution with units, apply the following scoring criteria: Allow 1 credit for the equation and substitution of values with units. If the equation and/or substitution with units is not shown, do not allow this credit. Allow credit if the student has listed the values with units and written a correct equation. Allow 1 credit for the correct answer (number and unit). If the number is given without the unit, allow credit if the credit for units was previously deducted for this calculation problem. Penalize a student only once per calculation problem for incorrect or omitted units. Allow credit if the answer is not expressed with the correct number of significant figures. P.S./Physics Rating Guide June 15 [3] Part B 2 51 [1] Allow 1 credit for the equation and substitution with units. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 1-credit response: _ P = Fv P = (1.30 104 N)(1.50 m/s) 52 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to question 51. Example of a 1-credit response: P = 1.95 104 W Note: Do not penalize the student more than 1 credit for errors in units in questions 51 and 52. 53 [1] Allow 1 credit for equation and substitution with units. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 1-credit response: v = f f= v 8 /s f = 3.00 10 m 2 2.00 10 m 54 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to question 53. Example of a 1-credit response: f = 1.50 1010 Hz Note: Do not penalize the student more than 1 credit for errors in units in questions 53 and 54. P.S./Physics Rating Guide June 15 [4] 55 [1] Allow 1 credit for the equation and substitution with units. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 1-credit responses: E = mc2 1 u = 931 MeV or 8 1 eV = 9.31 10 eV 19 E 1.60 10 J E = (1.67 10 27kg)(3.00 108 m/s)2 56 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s answer to question 55. Example of a 1-credit response: E = 1.50 10 10 J Note: Do not penalize the student more than 1 credit for errors in units in questions 55 and 56. 57 [1] Allow 1 credit for an arrow drawn from the car with the arrowhead pointed to the left. Example of a 1-credit response: Direction of car s motion 50. m Track, as Viewed from Above Note: The arrow need not start on the car to receive this credit. 58 [1] Allow 1 credit for the equation and substitution with units. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 1-credit response: 2 ac = v r 2 ac = (12 m/ s) 50. m P.S./Physics Rating Guide June 15 [5] 59 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to question 58. Example of a 1-credit response: ac = 2.9 m/s2 or 2.8 m/s2 Note: Do not penalize the student more than 1 credit for errors in units in questions 58 and 59. 60 [1] Allow 1 credit for a straight line with a positive slope. Horizontal Displacement Example of a 1-credit response: Time Note: The line may be sketched in. It must approximate a straight line, but need not pass through the origin. 61 [1] Allow 1 credit for the equation and substitution with units. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 1-credit responses: a = v t a = v t t = v a or t = 15.0 m/ s2 9.81 m/ s t = v a .5 m/ s) t = 7.5 m/ s (+72 9.81 m/ s a = v t or t = v a t = 7.5 m/ s 2 9.81 m/ s2 d = vit + 1 2 at 2 or 0 m = (7.5 m/s)t + 1 ( 9.8 m/s2)t2 2 62 [1] Allow 1 credit for a correct answer with units or for an answer, with units, that is consistent with the student s response to question 61. Example of a 1-credit response: t = 1.5 s Note: Do not penalize the student more than 1 credit for errors in units in questions 61 and 62. P.S./Physics Rating Guide June 15 [6] 63 [1] Allow 1 credit for 56 2 . 64 [1] Allow 1 credit for the equation and substitution with units or for an answer with units consistent with the student s response to question 63. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 1-credit response: n1 sin 1 = n2 sin 2 n1 = n2 sin 2 sin 1 n1 = 1.00 sin 56 sin 30. 65 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to questions 63 and 64. Example of a 1-credit response: n1 = 1.7 or 1.6 Note: Do not penalize the student more than 1 credit for errors in units in questions 64 and 65. P.S./Physics Rating Guide June 15 [7] Part C 66 [1] Allow 1 credit for 1.96 N or 2.0 N or 1.9 N. 67 [1] Allow 1 credit for the equation and substitution with units or for an answer, with units, consistent with the student s response to question 66. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 1-credit response: Ff = FN Ff = (0.36)(1.96 N) 68 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to questions 66 and 67. Example of a 1-credit response: Ff = 0.71 N or 0.70 N Note: Do not penalize the student more than 1 credit for errors in units in questions 67 and 68. 69 [1] Allow 1 credit for 3.3 N or an answer that is consistent with the student s response to question 68. 70 [1] Allow 1 credit. Acceptable responses include, but are not limited to: The magnitude of the velocity increases. The block speeds up Note: Allow credit for an answer consistent with the student s response to question 69. P.S./Physics Rating Guide June 15 [8] 71 [1] Allow 1 credit for at least three arrows pointing away from the positive plate toward the negative plate. Examples of 1-credit responses: + + + + + + + + + + + + + + + + + + + + e- e- or Note: Use of a straightedge is not necessary to draw the field lines. Field lines near the edge of the plates may be curved. 72 [1] Allow 1 credit. Acceptable responses include, but are not limited to: toward the positive plate toward the top of the page opposite the direction of the field 73 [1] Allow 1 credit for the equation and substitution with units. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 1-credit responses: E= Fe q E= V d or 16 E = 3.8 10 N 1.60 10 19 C E= 12 V 5.0 10 3 m 74 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to question 73. Example of a 1-credit response: E = 2.4 103 N/C or 2.3 103 N/C Note: Do not penalize the student more than 1 credit for errors in units in questions 73 and 74. 75 [1] Allow 1 credit. Acceptable responses include, but are not limited to: The force will remain constant. The force doesn t change. P.S./Physics Rating Guide June 15 [9] 76 [1] Allow 1 credit for f or energy level f. 77 [1] Allow 1 credit for 4.90 10 19 J or 4.89 10 19 J 78 [1] Allow 1 credit for the equation and substitution with units or for an answer, with units, that is consistent with the student s response to question 77. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 1-credit response: Ephoton = hf f= f= Ephoton h 4.90 10 19 J 6.63 10 34 J s 79 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to questions 78 and 79. Example of a 1-credit response: f = 7.39 1014 Hz or 7.38 1014 Hz Note: Do not penalize the student more than 1 credit for errors in units in questions 78 and 79. 80 [1] Allow 1 credit for the correct answer or an answer that is consistent with the student s response to question 79. Acceptable response include but are not limited to: visible light violet P.S./Physics Rating Guide June 15 [10] 81 [1] Allow 1 credit for the equation and substitution with units. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 1-credit responses: 2 P= V R 2 R= V P or 2 R = (120. V) 40. W R= V I R = 120. V 0.33 A 82 [1] Allow 1 credit for the correct answer with units or for an answer, with units, that is consistent with the student s response to question 81. Example of a 1-credit response: R = 360 Note: Do not penalize the student more than 1 credit for errors in units in questions 81 and 82. 83 [1] Allow 1 credit for indicating that there would be no change in the power dissipated. 84 [1] Allow 1 credit for indicating that the equivalent resistance would increase. 85 [1] Allow 1 credit for indicating that the equivalent resistance of the series circuit would be greater than the equivalent resistance of the parallel circuit. P.S./Physics Rating Guide June 15 [11]

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