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New York Regents Physics June 2007

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PS/PHYSICS The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS Thursday, June 21, 2007 9:15 a.m. to 12:15 p.m., only The answer sheet for Part A and Part B 1 is the last page of this examination booklet. Turn to the last page and fold it along the perforations. Then, slowly and carefully, tear off the answer sheet and fill in the heading. The answer booklet for Part B 2 and Part C is stapled in the center of this examination booklet. Open the examination booklet, carefully remove the answer booklet, and close the examination booklet. Then fill in the heading of your answer booklet. You are to answer all questions in all parts of this examination according to the directions provided in the examination booklet. Record your answers to the Part A and Part B 1 multiple-choice questions on your separate answer sheet. Write your answers to the Part B 2 and Part C questions in your answer booklet. All work 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 the answer sheet and in the answer booklet. When you have completed the examination, you must sign the statement printed at the end of 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. The use of any communications device is strictly prohibited when taking this examination. If you use any communications device, no matter how briefly, your examination will be invalidated and no score will be calculated for you. DO NOT OPEN THIS EXAMINATION BOOKLET UNTIL THE SIGNAL IS GIVEN. PS/PHYSICS Part A Answer all questions in this part. Directions (1 35): For each statement or question, write on the separate answer sheet the number of the word or expression that, of those given, best completes the statement or answers the question. 1 Which is not a vector quantity? (1) electric charge (2) magnetic field strength (3) velocity (4) displacement Note that question 5 has only three choices. 5 As the angle between two concurrent forces decreases, the magnitude of the force required to produce equilibrium (1) decreases (2) increases (3) remains the same 2 An astronaut standing on a platform on the Moon drops a hammer. If the hammer falls 6.0 meters vertically in 2.7 seconds, what is its acceleration? (1) 1.6 m/s2 (3) 4.4 m/s2 2 (2) 2.2 m/s (4) 9.8 m/s2 6 A child walks 5.0 meters north, then 4.0 meters east, and finally 2.0 meters south. What is the magnitude of the resultant displacement of the child after the entire walk? (1) 1.0 m (3) 3.0 m (2) 5.0 m (4) 11.0 m 3 A 2.00-kilogram object weighs 19.6 newtons on Earth. If the acceleration due to gravity on Mars is 3.71 meters per second2, what is the object s mass on Mars? (1) 2.64 kg (3) 19.6 N (2) 2.00 kg (4) 7.42 N 7 The diagram below represents a spring hanging vertically that stretches 0.075 meter when a 5.0newton block is attached. The spring-block system is at rest in the position shown. 4 A car moves with a constant speed in a clockwise direction around a circular path of radius r, as represented in the diagram below. North West car East r 0.075 m 5.0 N South When the car is in the position shown, its acceleration is directed toward the (1) north (3) south (2) west (4) east Physics June 07 The value of the spring constant is (1) 38 N/m (3) 130 N/m (2) 67 N/m (4) 650 N/m [2] 8 A 0.50-kilogram object moves in a horizontal circular path with a radius of 0.25 meter at a constant speed of 4.0 meters per second. What is the magnitude of the object s acceleration? (1) 8.0 m/s2 (3) 32 m/s2 2 (2) 16 m/s (4) 64 m/s2 12 A horizontal force of 5.0 newtons acts on a 3.0-kilogram mass over a distance of 6.0 meters along a horizontal, frictionless surface. What is the change in kinetic energy of the mass during its movement over the 6.0-meter distance? (1) 6.0 J (3) 30. J (2) 15 J (4) 90. J 9 Which situation will produce the greatest change of momentum for a 1.0-kilogram cart? (1) accelerating it from rest to 3.0 m/s (2) accelerating it from 2.0 m/s to 4.0 m/s (3) applying a net force of 5.0 N for 2.0 s (4) applying a net force of 10.0 N for 0.5 s 13 Which quantity is a measure of the rate at which work is done? (1) energy (3) momentum (2) power (4) velocity 14 The diagram shows two bowling balls, A and B, each having a mass of 7.00 kilograms, placed 2.00 meters apart. 10 Earth s mass is approximately 81 times the mass of the Moon. If Earth exerts a gravitational force of magnitude F on the Moon, the magnitude of the gravitational force of the Moon on Earth is (1) F (3) 9F F (2) 81 (4) 81F A 7.00 kg What is the magnitude of the gravitational force exerted by ball A on ball B? (1) 8.17 10 9 N (3) 8.17 10 10 N 9 (2) 1.63 10 N (4) 1.17 10 10 N Data Table Mass (kg) Speed (m/s) A 1.0 4.0 B 2.0 2.0 C 0.5 4.0 D 4.0 7.00 kg 2.00 m 11 The table below lists the mass and speed of each of four objects. Objects B 1.0 15 If 1.0 joule of work is required to move 1.0 coulomb of charge between two points in an electric field, the potential difference between the two points is (1) 1.0 100 V (3) 6.3 1018 V 9 (2) 9.0 10 V (4) 1.6 10 19 V Which two objects have the same kinetic energy? (1) A and D (3) A and C (2) B and D (4) B and C Physics June 07 16 The current through a 10.-ohm resistor is 1.2 amperes. What is the potential difference across the resistor? (1) 8.3 V (3) 14 V (2) 12 V (4) 120 V [3] [OVER] 20 A 4.50-volt personal stereo uses 1950 joules of electrical energy in one hour. What is the electrical resistance of the personal stereo? (1) 433 (3) 37.4 (2) 96.3 (4) 0.623 17 A copper wire of length L and cross-sectional area A has resistance R. A second copper wire at the same temperature has a length of 2L and a cross-sectional area of 1 2 A. What is the resistance of the second copper wire? (1) R (3) 1 2R (2) 2R Note that question 21 has only three choices. (4) 4R 21 As yellow light ( f = 5.09 1014 Hz) travels from zircon into diamond, the speed of the light (1) decreases (2) increases (3) remains the same 18 A 6.0-ohm lamp requires 0.25 ampere of current to operate. In which circuit below would the lamp operate correctly when switch S is closed? (1) S 1.5 V 6.0 22 The diagram below represents a transverse wave. D (2) S 6.0 A 1.5 V C B E 6.0 (3) 1.5 V S The distance between which two points identifies the amplitude of the wave? (1) A and B (3) A and E (2) A and C (4) D and E 23 The diagram below represents a periodic wave. (4) 1.5 V 6.0 S A B P 19 What is the total current in a circuit consisting of six operating 100-watt lamps connected in parallel to a 120-volt source? (1) 5 A (3) 600 A (2) 20 A (4) 12 000 A Physics June 07 C D Which point on the wave is in phase with point P? (1) A (3) C (2) B (4) D [4] 24 What is the period of a 60.-hertz electromagnetic wave traveling at 3.0 108 meters per second? (3) 6.0 101 s (1) 1.7 10 2 s (2) 2.0 10 7 s (4) 5.0 106 s 29 A beam of monochromatic light approaches a barrier having four openings, A, B, C, and D, of different sizes as shown below. 25 At an outdoor physics demonstration, a delay of 0.50 second was observed between the time sound waves left a loudspeaker and the time these sound waves reached a student through the air. If the air is at STP, how far was the student from the speaker? (1) 1.5 10 3 m (3) 6.6 102 m (2) 1.7 102 m (4) 1.5 108 m A = 0.2 mm B = 0.3 mm Light beam C = 0.4 mm 26 A microwave and an x ray are traveling in a vacuum. Compared to the wavelength and period of the microwave, the x ray has a wavelength that is (1) longer and a period that is shorter (2) longer and a period that is longer (3) shorter and a period that is longer (4) shorter and a period that is shorter D = 0.5 mm Barrier Which opening will cause the greatest diffraction? (1) A (3) C (2) B (4) D 27 Which type of wave requires a material medium through which to travel? (1) electromagnetic (3) sound (2) infrared (4) radio 30 Two waves having the same frequency and amplitude are traveling in the same medium. Maximum constructive interference occurs at points where the phase difference between the two superposed waves is (1) 0 (3) 180 (2) 90 (4) 270 28 A car traveling at 70 kilometers per hour accelerates to pass a truck. When the car reaches a speed of 90 kilometers per hour the driver hears the glove compartment door start to vibrate. By the time the speed of the car is 100 kilometers per hour, the glove compartment door has stopped vibrating. This vibrating phenomenon is an example of (1) the Doppler effect (2) diffraction (3) resonance (4) destructive interference Physics June 07 31 A student sees a train that is moving away from her and sounding its whistle at a constant frequency. Compared to the sound produced by the whistle, the sound observed by the student is (1) greater in amplitude (2) a transverse wave rather than a longitudinal wave (3) higher in pitch (4) lower in pitch [5] [OVER] 34 Light demonstrates the characteristics of (1) particles, only (2) waves, only (3) both particles and waves (4) neither particles nor waves 32 Which quantity of excess electric charge could be found on an object? (1) 6.25 10 19 C (2) 4.80 10 19 C (3) 6.25 elementary charges (4) 1.60 elementary charges 35 The energy produced by the complete conversion of 2.0 10 5 kilogram of mass into energy is (1) 1.8 TJ (3) 1.8 MJ (2) 6.0 GJ (4) 6.0 kJ 33 The diagram below represents two electrically charged identical-sized metal spheres, A and B. B A 7 +2.0 10 C 7 +1.0 10 C If the spheres are brought into contact, which sphere will have a net gain of electrons? (1) A, only (3) both A and B (2) B, only (4) neither A nor B Physics June 07 [6] Part B 1 Answer all questions in this part. Directions (36 46): For each statement or question, write on the separate answer sheet the number of the word or expression that, of those given, best completes the statement or answers the question. 36 What is the approximate length of a baseball bat? (1) 10 1 m (3) 101 m 0 (2) 10 m (4) 102 m 40 An observer recorded the following data for the motion of a car undergoing constant acceleration. Time (s) 3.0 (2) kg m s (4) kg 2 m2 s2 7.0 6.0 kg m2 (3) s2 8.5 What was the magnitude of the acceleration of the car? (1) 1.3 m/s2 (3) 1.5 m/s2 2 (2) 2.0 m/s (4) 4.5 m/s2 Base your answers to questions 38 and 39 on the information below. 41 Which graph best represents the relationship between the velocity of an object thrown straight upward from Earth s surface and the time that elapses while it is in the air? [Neglect friction.] Velocity A stream is 30. meters wide and its current flows southward at 1.5 meters per second. A toy boat is launched with a velocity of 2.0 meters per second eastward from the west bank of the stream. Velocity kg m (1) s2 4.0 5.0 37 A force of 1 newton is equivalent to 1 Speed (m/s) 38 What is the magnitude of the boat s resultant velocity as it crosses the stream? (1) 0.5 m/s (3) 3.0 m/s (2) 2.5 m/s (4) 3.5 m/s (1) (3) Velocity 39 How much time is required for the boat to reach the opposite bank of the stream? (1) 8.6 s (3) 15 s (2) 12 s (4) 60. s Time Velocity Time Time Time (2) Physics June 07 [7] (4) [OVER] 44 Which graph best represents the relationship between the power required to raise an elevator and the speed at which the elevator rises? Frictionless surface Mass B Which scaled vector best represents the momentum of the system after the masses collide? Displacement Potential energy Potential energy (3) Speed (2) Physics June 07 Potential energy Displacement (2) Speed (4) 45 Baryons may have charges of (1) +1e and + 4 (3) 1e and +1e 3e (2) +2e and +3e (4) 2e and 2 3e 46 The slope of a graph of photon energy versus photon frequency represents (1) Planck s constant (2) the mass of a photon (3) the speed of light (4) the speed of light squared Displacement (3) (1) Power (4) 43 A pendulum is pulled to the side and released from rest. Which graph best represents the relationship between the gravitational potential energy of the pendulum and its displacement from its point of release? Potential energy Speed (1) (3) (2) Speed Power (1) Power Mass A Power 42 In the diagram below, scaled vectors represent the momentum of each of two masses, A and B, sliding toward each other on a frictionless, horizontal surface. Displacement (4) [8] Part B 2 Answer all questions in this part. Directions (47 60): Record your answers in the spaces provided in your answer booklet. Base your answers to questions 47 and 48 on the information below. Base your answers to questions 52 and 53 on the information and diagram below. The magnitude of the electric field strength between two oppositely charged parallel metal plates is 2.0 103 newtons per coulomb. Point P is located midway between the plates. A force of 60. newtons is applied to a rope to pull a sled across a horizontal surface at a constant velocity. The rope is at an angle of 30. degrees above the horizontal. F = 60. N 47 On the diagram in your answer booklet, sketch at least five electric field lines to represent the field between the two oppositely charged plates. [Draw an arrowhead on each field line to show the proper direction.] [1] 30. Horizontal surface 52 Calculate the magnitude of the component of the 60.-newton force that is parallel to the horizontal surface. [Show all work, including the equation and substitution with units.] [2] 48 An electron is located at point P between the plates. Calculate the magnitude of the force exerted on the electron by the electric field. [Show all work, including the equation and substitution with units.] [2] 53 Determine the magnitude of the frictional force acting on the sled. [1] Base your answers to questions 49 through 51 on the information below. 54 A book sliding across a horizontal tabletop slows until it comes to rest. Describe what change, if any, occurs in the book s kinetic energy and internal energy as it slows. [2] A student generates a series of transverse waves of varying frequency by shaking one end of a loose spring. All the waves move along the spring at a speed of 6.0 meters per second. 49 Complete the data table in your answer booklet, by determining the wavelengths for the frequencies given. [1] 50 On the grid in your answer booklet, plot the data points for wavelength versus frequency. [1] 51 Draw the best-fit line or curve. [1] Physics June 07 [9] [OVER] Base your answers to questions 55 through 57 on the information and diagram below. A projectile is launched into the air with an initial speed of vi at a launch angle of 30. above the horizontal. The projectile lands on the ground 2.0 seconds later. 30. Projectile Ground Launcher 55 On the diagram in your answer booklet, sketch the ideal path of the projectile. [1] 56 How does the maximum altitude of the projectile change as the launch angle is increased from 30. to 45 above the horizontal? [Assume the same initial speed, vi.] [1] 57 How does the total horizontal distance traveled by the projectile change as the launch angle is increased from 30. to 45 above the horizontal? [Assume the same initial speed, vi.] [1] Base your answers to questions 58 through 60 on the information and diagram below. A 3.0-ohm resistor, an unknown resistor, R, and two ammeters, A1 and A2, are connected as shown with a 12-volt source. Ammeter A2 reads a current of 5.0 amperes. 5.0 A A2 A1 12 V 3.0 R 58 Determine the equivalent resistance of the circuit. [1] 59 Calculate the current measured by ammeter A1. [Show all work, including the equation and substitution with units.] [2] 60 Calculate the resistance of the unknown resistor, R. [Show all work, including the equation and substitution with units.] [2] Physics June 07 [10] Part C Answer all questions in this part. Directions (61 74): Record your answers in the spaces provided in your answer booklet. Base your answers to question 61 through 65 on the information and diagram below. Base your answers to questions 66 and 67 on the information and diagram below. A horizontal force of 8.0 newtons is used to pull a 20.-newton wooden box moving toward the right along a horizontal, wood surface, as shown. A pop-up toy has a mass of 0.020 kilogram and a spring constant of 150 newtons per meter. A force is applied to the toy to compress the spring 0.050 meter. 20. N wooden box F = 8.0 N Force Wood 61 Starting at point P on the diagram in your answer booklet, use a metric ruler and a scale of 1.0 cm = 4.0 N to draw a vector representing the normal force acting on the box. Label the vector FN. [1] Suction cup 62 Calculate the magnitude of the frictional force acting on the box. [Show all work, including the equation and substitution with units.] [2] Base 66 Calculate the potential energy stored in the compressed spring. [Show all work, including the equation and substitution with units.] [2] 63 Determine the magnitude of the net force acting on the box. [1] 64 Determine the mass of the box. [1] 67 The toy is activated and all the compressed spring s potential energy is converted to gravitational potential energy. Calculate the maximum vertical height to which the toy is propelled. [Show all work, including the equation and substitution with units.] [2] 65 Calculate the magnitude of the acceleration of the box. [Show all work, including the equation and substitution with units.] [2] Physics June 07 Spring that compresses [11] [OVER] Base your answers to questions 68 through 71 on the diagram below, which shows a light ray ( f = 5.09 1014 Hz) in air, incident on a boundary with fused quartz. At the boundary, part of the light is refracted and part of the light is reflected. Base your answers to questions 72 through 74 on the information below. A photon with a frequency of 5.02 1014 hertz is absorbed by an excited hydrogen atom. This causes the electron to be ejected from the atom, forming an ion. Normal Incid ight ent l 72 Calculate the energy of this photon in joules. [Show all work, including the equation and substitution with units.] [2] ray 73 Determine the energy of this photon in electronvolts. [1] 74 What is the number of the lowest energy level (closest to the ground state) of a hydrogen atom that contains an electron that would be ejected by the absorption of this photon? [1] Air Fused quartz 68 Using a protractor, measure the angle of incidence of the light ray at the air-fused quartz boundary. [1] 69 Calculate the angle of refraction of the incident light ray. [Show all work, including the equation and substitution with units.] [2] 70 Using a protractor and straightedge, construct the refracted light ray in the fused quartz on the diagram in your answer booklet. [1] 71 Using a protractor and straightedge, construct the reflected light ray on the diagram in your answer booklet. [1] Physics June 07 [12] Physics June 07 [13] Physics June 07 [14] The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING Tear Here PHYSICS Thursday, June 21, 2007 9:15 a.m. to 12:15 p.m., only ANSWER SHEET Student . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sex: Male Female Grade . . . . . . . . . . . . . Teacher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . School . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Record your answers to Part A and Part B 1 on this answer sheet. Part B 1 Part A 1 ............ 13 . . . . . . . . . . . . 25 . . . . . . . . . . . 36 . . . . . . . . . . . . 42 . . . . . . . . . . . . 2 ............ 14 . . . . . . . . . . . . 26 . . . . . . . . . . . 37 . . . . . . . . . . . . 43 . . . . . . . . . . . . 3 ............ 15 . . . . . . . . . . . . 27 . . . . . . . . . . . 38 . . . . . . . . . . . . 44 . . . . . . . . . . . . 4 ............ 16 . . . . . . . . . . . . 28 . . . . . . . . . . . 39 . . . . . . . . . . . . 45 . . . . . . . . . . . . 5 ............ 17 . . . . . . . . . . . . 29 . . . . . . . . . . . 40 . . . . . . . . . . . . 46 . . . . . . . . . . . . 6 ............ 18 . . . . . . . . . . . . 30 . . . . . . . . . . . 41 . . . . . . . . . . . . 7 ............ 19 . . . . . . . . . . . . 31 . . . . . . . . . . . 8 ............ 20 . . . . . . . . . . . . 32 . . . . . . . . . . . 9 ............ 21 . . . . . . . . . . . . 33 . . . . . . . . . . . 10 . . . . . . . . . . . . 22 . . . . . . . . . . . . 34 . . . . . . . . . . . 11 . . . . . . . . . . . . 23 . . . . . . . . . . . . 35 . . . . . . . . . . . 12 . . . . . . . . . . . . 24 . . . . . . . . . . . . Part B 1 Score Part A Score Write your answers to Part B 2 and Part C in your answer booklet. Tear Here The declaration below should be signed when you have completed the examination. I do hereby affirm, at the close of this examination, that I had no unlawful knowledge of the questions or answers prior to the examination and that I have neither given nor received assistance in answering any of the questions during the examination. Signature PS/PHYSICS Tear Here Tear Here PS/PHYSICS Maximum Score The University of the State of New York Part REGENTS HIGH SCHOOL EXAMINATION A ANSWER BOOKLET Student . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Male Sex: Female 20 Total Written Test Score (Maximum Raw Score: 85) Final Score (From Conversion Chart) Teacher. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . School . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 C Thursday, June 21, 2007 9:15 a.m. to 12:15 p.m., only 11 B 2 PHYSICS 35 B 1 PHYSICAL SETTING Student s Score Grade . . . . . . . . . . Raters Initials: Answer all questions in Part B 2 and Part C. Record your answers in this booklet. Rater 1 . . . . . . . . . . Rater 2 . . . . . . . . . . . Part B 2 47 49 Data Table Frequency Wavelength (Hz) (m) 1.0 +++++++++++++ P 2.0 3.0 6.0 50 51 48 Wavelength vs. Frequency Wavelength (m) 6.0 5.0 4.0 3.0 2.0 1.0 0 0 1.0 2.0 3.0 4.0 5.0 6.0 Frequency (Hz) [a] [OVER] 52 53 __________________ N 54 ____________________________________________________________________________________________ ____________________________________________________________________________________________ 55 30. Projectile Ground Launcher 56 ____________________________________________________________________________________________ ____________________________________________________________________________________________ 57 ____________________________________________________________________________________________ ____________________________________________________________________________________________ 58 _________________ 59 [b] 60 Part C 61 64 _______________ kg 65 P 66 62 67 63 ________________ N [c] 68 72 _________________ 69 70 71 73 _____________ eV 74 n = _____________ Normal ight ent l Incid ray Air Fused quartz [d] FOR TEACHERS ONLY The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PS P PHYSICAL SETTING/PHYSICS Thursday, June 21, 2007 9:15 a.m. to 12:15 p.m., only SCORING KEY AND RATING GUIDE Directions to the Teacher: Refer to the directions on page 3 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 http://www.emsc.nysed.gov/osa/ and select the link Examination 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 Part B 1 1 . . . . . 1. . . . . 13 . . . . .2. . . . . 25 . . . . .2. . . . . 36 . . . . .2. . . . . 42 . . . . .2. . . . . 2 . . . . . 1. . . . . 14 . . . . .3. . . . . 26 . . . . .4. . . . . 37 . . . . .1. . . . . 43 . . . . .4. . . . . 3 . . . . . 2. . . . . 15 . . . . .1. . . . . 27 . . . . .3. . . . . 38 . . . . .2. . . . . 44 . . . . .1. . . . . 4 . . . . . 4. . . . . 16 . . . . .2. . . . . 28 . . . . .3. . . . . 39 . . . . .3. . . . . 45 . . . . .3. . . . . 5 . . . . . 2. . . . . 17 . . . . .4. . . . . 29 . . . . .1. . . . . 40 . . . . .3. . . . . 46 . . . . .1. . . . . 6 . . . . . 2. . . . . 18 . . . . .4. . . . . 30 . . . . .1. . . . . 41 . . . . .4. . . . . 7 . . . . .2 . . . . 19 . . . . .1. . . . . 31 . . . . .4. . . . . 8 . . . . . 4. . . . . 20 . . . . .3. . . . . 32 . . . . .2. . . . . 9 . . . . .3. . . . . 21 . . . . .1. . . . . 33 . . . . .1. . . . . 10 . . . . .1. . . . . 22 . . . . .3. . . . . 34 . . . . .3. . . . . 11 . . . . .4. . . . . 23 . . . . .3. . . . . 35 . . . . .1. . . . . 12 . . . . .3. . . . . 24 . . . . .1. . . . . [2] PHYSICAL SETTING/PHYSICS continued 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. Use only red ink or red pencil in rating Regents papers. Do not attempt to correct the student s work by making insertions or changes of any kind. On the detachable answer sheet 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. 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 scaled score by using the conversion chart that will be posted on the Department s web site http://www.emsc.nysed.gov/osa/ on Thursday, June 21, 2007. The student s scaled score should be entered in the labeled box on the student s answer booklet. The scaled score is the student s final examination score. All student answer papers that receive a scaled score of 60 through 64 must be scored a second time. For the second scoring, a different committee of teachers may score the student s paper or the original committee may score the paper, except that no teacher may score the same open-ended questions that he/she scored in the first rating of the paper. The school principal is responsible for assuring that the student s final examination score is based on a fair, accurate, and reliable scoring of the student s answer paper. Because scaled scores corresponding to raw scores in the conversion chart may change from one examination 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. [3] [OVER] Please refer to 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.emsc.nysed.gov/osa/scire/scirearch/phyratg02.pdf. Teachers should become familiar with this guide before rating students papers. 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 1 credit for the correct answer (number and unit). If the number is given without the unit, do not allow this credit. Penalize a student only once per equation for omitting units. Allow full credit even if the answer is not expressed with the correct number of significant figures. Part B 2 47 [1] Allow 1 credit for drawing at least five straight parallel lines perpendicular to the plates and pointing toward the negative plate. The lines must originate and end on the plates. Example of a 1-credit response: Note: Curved lines beyond the edges of the plates are acceptable. Parallel lines need not be equally spaced. 48 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: Fe q Fe = Eq E= Fe = (2.0 103 N/C) (1.6 10 19 C) Fe = 3.2 10 16 N [4] PHYSICAL SETTING/PHYSICS continued 49 [1] Allow 1 credit for correctly determining all four wavelengths, as shown below. Data Table Frequency Wavelength (Hz) (m) 1.0 6.0 2.0 3.0 3.0 2.0 6.0 1.0 50 [1] Allow 1 credit for correctly plotting all four data points ( 0.3 grid space). Note: Allow credit for an answer that is consistent with the student s response to question 49. 51 [1] Allow 1 credit for drawing the best-fit curve. Note: Allow credit for an answer that is consistent with the student s response to question 50. Example of a 2-credit response for questions 50 and 51: Wavelength vs. Frequency Wavelength (m) 6.0 5.0 4.0 3.0 2.0 1.0 0 0 1.0 2.0 3.0 4.0 5.0 6.0 Frequency (Hz) [5] [OVER] 52 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: Ax = A cos Fx = (60. N) cos 30. Fx = 52 N 53 [1] Allow 1 credit for 52 N or an answer that is consistent with the student s response to question 52. 54 [2] Allow a maximum of 2 credits, 1 credit for indicating that the kinetic energy decreases and 1 credit for indicating that internal energy increases. Note: Do not allow credit for indicating that kinetic energy changes into potential energy. 55 [1] Allow 1 credit for a parabolic-shaped path. Example of a 1-credit response: 56 [1] Allow 1 credit for indicating that the projectile s maximum altitude will increase. 57 [1] Allow 1 credit for indicating that the total horizontal distance will increase. [6] PHYSICAL SETTING/PHYSICS continued 58 [1] Allow 1 credit for 2.4 . 59 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: V I V I = R 12 V I = 3.0 R= I = 4.0 A 60 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 2-credit responses: V I 12 V R= 1.0 A R = 12 1 1 1 = + Req R1 R2 R= or 1 1 1 + = R 3 2.4 R = 12 Note: Allow credit for an answer that is consistent with the student s response to question 58 and/or question 59. [7] [OVER] Part C 61 [1] Allow 1 credit for drawing and labeling a vector 5.0 cm ( 0.2 cm) long, directed upward. Do not allow credit if the vector is not labeled or is missing the arrowhead. Example of a 1-credit response: Note: Allow credit if the student draws the correct vector from the box and not from point P. 62 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: Ff = FN Ff = (0.30) (20. N) Ff = 6.0 N 63 [1] Allow 1 credit for 2.0 N or an answer that is consistent with the student s response to question 62. 64 [1] Allow 1 credit for 2.0 kg. [8] PHYSICAL SETTING/PHYSICS continued 65 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: Fnet m 2.0 N a= 2.0 kg a = 1.0 m s 2 a= Note: Allow credit for an answer that is consistent with the student s responses to questions 63 and 64. 66 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: 2 PEs = 1 2 kx PEs = 1 2 (150 N m )( 0.050 m ) 2 PEs = 0.19 J or 1.9 10 1 J or 0.1875 J 67 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: PE = mg h PE h = mg h = 0.19 J 0.020 kg ( 9.81m s 2 ) h = 0.97 m Note: Allow credit for an answer that is consistent with the student s response to question 66. [9] [OVER] 68 [1] Allow 1 credit for 17 2 . 69 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: n1 sin sin sin 2 2 1 = = n2 sin n1 sin n2 2 1 1.00 sin 17 1.46 = 12 or 11.6 2 = Note: Allow credit for an answer that is consistent with the student s response to question 68. [10] PHYSICAL SETTING/PHYSICS continued 70 [1] Allow 1 credit for drawing the refracted ray at an angle of 12 2 , or an answer that is consistent with the student s response to question 69. 71 [1] Allow 1 credit for drawing the reflected ray at an angle of 17 2 , or an answer that is consistent with the student s response to question 68. Example of a 2-credit response for questions 70 and 71: Note: Rays do not have to have arrows to receive credit. [11] [OVER] 72 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: E photon = hf E photon = (6.63 10 34 J is) (5.02 1014 Hz) E photon = 3.33 10 19 J 73 [1] Allow 1 credit for 2.08 eV or an answer that is consistent with the student s response to question 72. 74 [1] Allow 1 credit for n = 3 or an answer that is consistent with the student s response to question 73. [12] Regents Examination in Physical Setting/Physics June 2007 Chart for Converting Total Test Raw Scores to Final Examination Scores (Scaled Scores) The Chart for Determining the Final Examination Score for the June 2007 Regents Examination in Physical Setting/Physics will be posted on the Department s web site http://www.emsc.nysed.gov/osa/ on Thursday, June 21, 2007. Conversion charts provided for previous administrations of the Regents Examination in Physical Setting/Physics must NOT be used to determine students final scores for this administration. On-line Submission of Teacher Evaluations of the Test to the Department Suggestions and feedback from teachers provide an important contribution to the test development process. The Department provides an on-line evaluation form for State assessments. It contains spaces for teachers to respond to several specific questions and to make suggestions. Instructions for completing the evaluation form are as follows: 1. Go to www.emsc.nysed.gov/osa/exameval. 2. Select the test title. 3. Complete the required demographic fields. 4. Complete each evaluation question and provide comments in the space provided. 5. Click the SUBMIT button at the bottom of the page to submit the completed form. [13] Map to Core Curriculum June 2007 Physical Setting/Physics Question Numbers Key Ideas Part A Part B Part C 38,39,40,48,59,60 62,63,64,65,66,69, 72,73 Standard 1 Math Key Idea 1 2,7,8,9,11,12,14,17,19,20, 25,35 Math Key Idea 2 41,43,44 Math Key Idea 3 46 Sci. Inq. Key Idea 1 Sci. Inq. Key Idea 2 Sci. Inq. Key Idea 3 11 40,49,50,51 67,68 47,55,56,57 61,68,70,71 Eng. Des. Key Idea 1 Standard 2 Key Idea 1 Key Idea 2 Standard 6 Key Idea 1 Key Idea 2 4,18,22,23,29 Key Idea 3 36 Key Idea 4 53 Key Idea 5 Key Idea 6 Standard 7 Key Idea 1 Key Idea 2 Standard 4 Process Skills 4.1 16,18 43,44,54,58 4.3 5.1 67 68,69,70,71 6,7 42,52,55 45 5.3 61 74 43,44,54,58,59,60 66,67 49,50,51 68,69,70,71 38,39,40,41,42,47, 61,62,63,64,65 Standard 4 4.1 4.3 11,12,13,15,16,17,18,19,20 21,22,23,24,25,26,27,28,29 ,30,31 1,2,3,4,5,6,7,8,9,10,14 5.1 5.3 48,52,53,55,56,57 32,33,34,35 45,46 [14] 72,73,74

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