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New York Regents Physics January 2006

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PS/PHYSICS The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS Thursday, January 26, 2006 1:15 to 4:15 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 2002 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 The speed of a wagon increases from 2.5 meters per second to 9.0 meters per second in 3.0 seconds as it accelerates uniformly down a hill. What is the magnitude of the acceleration of the wagon during this 3.0-second interval? (1) 0.83 m/s2 (3) 3.0 m/s2 2 (4) 3.8 m/s2 (2) 2.2 m/s Base your answers to questions 7 and 8 on the diagram below, which shows a 1.0-newton metal disk resting on an index card that is balanced on top of a glass. Metal disk Index card 2 A 1.0-kilogram ball is dropped from the roof of a building 40. meters tall. What is the approximate time of fall? [Neglect air resistance.] (1) 2.9 s (3) 4.1 s (2) 2.0 s (4) 8.2 s 7 What is the net force acting on the disk? (1) 1.0 N (3) 0 N (2) 2.0 N (4) 9.8 N 8 When the index card is quickly pulled away from the glass in a horizontal direction, the disk falls straight down into the glass. This action is a result of the disk s (1) inertia (3) shape (2) charge (4) temperature 3 Which is a scalar quantity? (1) acceleration (3) speed (2) momentum (4) displacement 4 A projectile is fired with an initial velocity of 120. meters per second at an angle, , above the horizontal. If the projectile s initial horizontal speed is 55 meters per second, then angle measures approximately (1) 13 (3) 63 (2) 27 (4) 75 9 A vertical spring 0.100 meter long is elongated to a length of 0.119 meter when a 1.00-kilogram mass is attached to the bottom of the spring. The spring constant of this spring is (1) 9.8 N/m (3) 98 N/m (2) 82 N/m (4) 520 N/m 5 A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart s velocity after a 6.0-newton westward force acts on it for 2.0 seconds? (1) 2.0 m/s east (3) 10. m/s east (2) 2.0 m/s west (4) 10. m/s west Note that question 10 has only three choices. 10 Compared to the force needed to start sliding a crate across a rough level floor, the force needed to keep it sliding once it is moving is (1) less (2) greater (3) the same 6 A 25.0-kilogram space probe fell freely with an acceleration of 2.00 meters per second2 just before it landed on a distant planet. What is the weight of the space probe on that planet? (1) 12.5 N (3) 50.0 N (2) 25.0 N (4) 250. N Physics Jan. 06 Glass 11 A 400-newton girl standing on a dock exerts a force of 100 newtons on a 10 000-newton sailboat as she pushes it away from the dock. How much force does the sailboat exert on the girl? (1) 25 N (3) 400 N (2) 100 N (4) 10 000 N [2] Note that question 12 has only three choices. 12 A student on her way to school walks four blocks east, three blocks north, and another four blocks east, as shown in the diagram. School 4 blocks 3 blocks Home 4 blocks Compared to the distance she walks, the magnitude of her displacement from home to school is (1) less (2) greater (3) the same 13 The diagram below represents two satellites of equal mass, A and B, in circular orbits around a planet. 14 The diagram below shows a 5.0-kilogram bucket of water being swung in a horizontal circle of 0.70-meter radius at a constant speed of 2.0 meters per second. 5.0-kg Bucket A 2R R Planet 0.70 m B Compared to the magnitude of the gravitational force of attraction between satellite A and the planet, the magnitude of the gravitational force of attraction between satellite B and the planet is (1) half as great (2) twice as great (3) one-fourth as great (4) four times as great Physics Jan. 06 The magnitude of the centripetal force on the bucket of water is approximately (1) 5.7 N (3) 29 N (2) 14 N (4) 200 N [3] [OVER] 15 A 6.8-kilogram block is sliding down a horizontal, frictionless surface at a constant speed of 6.0 meters per second. The kinetic energy of the block is approximately (1) 20. J (3) 120 J (2) 41 J (4) 240 J 20 A 0.25-kilogram baseball is thrown upward with a speed of 30. meters per second. Neglecting friction, the maximum height reached by the baseball is approximately (1) 15 m (3) 74 m (2) 46 m (4) 92 m 16 Through what vertical distance is a 50.-newton object moved if 250 joules of work is done against the gravitational field of Earth? (1) 2.5 m (3) 9.8 m (2) 5.0 m (4) 25 m 21 A truck weighing 3.0 104 newtons was driven up a hill that is 1.6 103 meters long to a level area that is 8.0 102 meters above the starting point. If the trip took 480 seconds, what was the minimum power required? (1) 5.0 104 W (3) 1.2 1010 W (2) 1.0 105 W (4) 2.3 1010 W 17 When a mass is placed on a spring with a spring constant of 15 newtons per meter, the spring is compressed 0.25 meter. How much elastic potential energy is stored in the spring? (1) 0.47 J (3) 1.9 J (2) 0.94 J (4) 3.8 J 22 The graph below represents the relationship between the potential difference (V) across a resistor and the current (I) through the resistor. D Note that question 18 has only three choices. 18 Two students of equal weight go from the first floor to the second floor. The first student uses an elevator and the second student walks up a flight of stairs. Compared to the gravitational potential energy gained by the first student, the gravitational potential energy gained by the second student is (1) less (2) greater (3) the same B A I Through which entire interval does the resistor obey Ohm s law? (1) AB (3) CD (2) BC (4) AD 23 Aluminum, copper, gold, and nichrome wires of equal lengths of 1.0 10 1 meter and equal cross-sectional areas of 2.5 10 6 meter 2 are at 20. C. Which wire has the greatest electrical resistance? (1) aluminum (3) gold (2) copper (4) nichrome 19 A 55.0-kilogram diver falls freely from a diving platform that is 3.00 meters above the surface of the water in a pool. When she is 1.00 meter above the water, what are her gravitational potential energy and kinetic energy with respect to the water s surface? (1) PE = 1620 J and KE = 0 J (2) PE = 1080 J and KE = 540 J (3) PE = 810 J and KE = 810 J (4) PE = 540 J and KE = 1080 J Physics Jan. 06 C V 24 How much electrical energy is required to move a 4.00-microcoulomb charge through a potential difference of 36.0 volts? (1) 9.00 106 J (3) 1.44 10 4 J (2) 144 J (4) 1.11 10 7 J [4] 25 What must be inserted between points A and B to establish a steady electric current in the incomplete circuit represented in the diagram below? A 29 How are electromagnetic waves that are produced by oscillating charges and sound waves that are produced by oscillating tuning forks similar? (1) Both have the same frequency as their respective sources. (2) Both require a matter medium for propagation. (3) Both are longitudinal waves. (4) Both are transverse waves. B R (1) (2) (3) (4) switch voltmeter magnetic field source source of potential difference 30 The diagram below represents a transverse wave traveling in a string. B 26 In a series circuit containing two lamps, the battery supplies a potential difference of 1.5 volts. If the current in the circuit is 0.10 ampere, at what rate does the circuit use energy? (1) 0.015 W (3) 1.5 W (2) 0.15 W (4) 15 W F E A C D 27 An electron placed between oppositely charged parallel plates A and B moves toward plate A, as represented in the diagram below. G H Which two labeled points are 180 out of phase? (1) A and D (3) D and F (2) B and F (4) D and H A 31 When observed from Earth, the wavelengths of light emitted by a star are shifted toward the red end of the electromagnetic spectrum. This redshift occurs because the star is (1) at rest relative to Earth (2) moving away from Earth (3) moving toward Earth at decreasing speed (4) moving toward Earth at increasing speed electron B What is the direction of the electric field between the plates? (1) toward plate A (3) into the page (2) toward plate B (4) out of the page 28 A sonar wave is reflected from the ocean floor. For which angles of incidence do the wave s angle of reflection equal its angle of incidence? (1) angles less than 45 , only (2) an angle of 45 , only (3) angles greater than 45 , only (4) all angles of incidence Physics Jan. 06 [5] [OVER] 33 Oil droplets may gain electrical charges as they are projected through a nozzle. Which quantity of charge is not possible on an oil droplet? (1) 8.0 10 19 C (3) 3.2 10 19 C 19 (2) 4.8 10 C (4) 2.6 10 19 C 32 The diagram below represents shallow water waves of constant wavelength passing through two small openings, A and B, in a barrier. P A 34 All photons in a vacuum have the same (1) speed (3) energy (2) wavelength (4) frequency B Crest Trough 35 Which phenomenon best supports the theory that matter has a wave nature? (1) electron momentum (2) electron diffraction (3) photon momentum (4) photon diffraction Which statement best describes the interference at point P? (1) It is constructive, and causes a longer wavelength. (2) It is constructive, and causes an increase in amplitude. (3) It is destructive, and causes a shorter wavelength. (4) It is destructive, and causes a decrease in amplitude. Physics Jan. 06 [6] Part B 1 Answer all questions in this part. Directions (36 47): 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 mass of an automobile? (3) 103 kg (1) 101 kg 2 (2) 10 kg (4) 106 kg 40 In the diagram below, a cart travels clockwise at constant speed in a horizontal circle. 37 Which pair of quantities can be expressed using the same units? (1) work and kinetic energy (2) power and momentum (3) impulse and potential energy (4) acceleration and weight A B D C At the position shown in the diagram, which arrow indicates the direction of the centripetal acceleration of the cart? (1) A (3) C (2) B (4) D 38 The graph below represents the relationship between speed and time for an object moving along a straight line. Speed vs. Time Speed (m/s) 25 41 Which changes would cause the greatest increase in the rate of flow of charge through a conducting wire? (1) increasing the applied potential difference and decreasing the length of wire (2) increasing the applied potential difference and increasing the length of wire (3) decreasing the applied potential difference and decreasing the length of wire (4) decreasing the applied potential difference and increasing the length of wire 20. 15 10. 5 0 1 2 3 4 5 Time (s) What is the total distance traveled by the object during the first 4 seconds? (1) 5 m (3) 40 m (2) 20 m (4) 80 m 42 According to the Standard Model of Particle Physics, a meson is composed of (1) a quark and a muon neutrino (2) a quark and an antiquark (3) three quarks (4) a lepton and an antilepton 39 An electrical generator in a science classroom makes a lightbulb glow when a student turns a hand crank on the generator. During its operation, this generator converts (1) chemical energy to electrical energy (2) mechanical energy to electrical energy (3) electrical energy to mechanical energy (4) electrical energy to chemical energy Physics Jan. 06 [7] [OVER] 43 Which vector diagram best represents a cart slowing down as it travels to the right on a horizontal surface? FN FN FN F Ff Ff F F Fg Fg (1) FN Ff Fg Fg (3) (2) F Ff (4) Time (1) Kinetic Energy Kinetic Energy Kinetic Energy Kinetic Energy 44 An object falls freely near Earth s surface. Which graph best represents the relationship between the object s kinetic energy and its time of fall? Time (2) Time (3) Time (4) 45 In the diagram below, a block of mass M initially at rest on a frictionless horizontal surface is struck by a bullet of mass m moving with horizontal velocity v. v m M What is the velocity of the bullet-block system after the bullet embeds itself in the block? +v m (MM ) (2) (m + M )v m +v m ( mM ) (4) ( m )v m +M (1) Physics Jan. 06 (3) [8] 46 Two 30.-newton forces act concurrently on an object. In which diagram would the forces produce a resultant with a magnitude of 30. newtons? 30. N 30. N 30. 30. N (1) 30. N 180. 120. 60. 30. N 30. N 30. N (3) (2) 30. N (4) 47 The diagram below represents the bright-line spectra of four elements, A, B, C, and D, and the spectrum of an unknown gaseous sample. Unknown sample Element A Element B Element C Element D Based on comparisons of these spectra, which two elements are found in the unknown sample? (1) A and B (3) B and C (2) A and D (4) C and D Physics Jan. 06 [9] [OVER] Part B 2 Answer all questions in this part. Directions (48 61): Record your answers in the spaces provided in your answer booklet. Base your answers to questions 48 through 51 on the graph below, which represents the relationship between vertical height and gravitational potential energy for an object near Earth s surface. (The same graph appears in your answer booklet.) Gravitational Potential Energy vs. Vertical Height Gravitational Potential Energy (J) 90. 80. 70. 60. 50. 40. 30. 20. 10. 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Vertical Height (m) 48 Based on the graph, what is the gravitational potential energy of the object when it is 2.25 meters above the surface of Earth? [1] 49 Using the graph, calculate the mass of the object. [Show all work, including the equation and substitution with units.] [2] 50 What physical quantity does the slope of the graph represent? [1] 51 Using a straightedge, draw a line on the graph in your answer booklet to represent the relationship between gravitational potential energy and vertical height for an object having a greater mass. [1] Physics Jan. 06 [10] Base your answers to questions 52 through 55 on the diagram below, which represents a ray of monochromatic light (f = 5.09 1014 hertz) in air incident on flint glass. (The same diagram appears in your answer booklet.) Normal Air 35 Flint glass 52 Determine the angle of incidence of the light ray in air. [1] 53 Calculate the angle of refraction of the light ray in the flint glass. [Show all work, including the equation and substitution with units.] [2] 54 Using a protractor and straightedge, draw the refracted ray on the diagram in your answer booklet. [1] 55 What happens to the light from the incident ray that is not refracted or absorbed? [1] 56 Objects in free fall near the surface of Earth accelerate downward at 9.81 meters per second2. Explain why a feather does not accelerate at this rate when dropped near the surface of Earth. [1] 59 On the diagram of a bar magnet in your answer booklet, draw a minimum of four field lines to show the magnitude and direction of the magnetic field in the region surrounding the bar magnet. [2] 57 A skier on waxed skis is pulled at constant speed across level snow by a horizontal force of 39 newtons. Calculate the normal force exerted on the skier. [Show all work, including the equation and substitution with units.] [2] 60 After a uranium nucleus emits an alpha particle, the total mass of the new nucleus and the alpha particle is less than the mass of the original uranium nucleus. Explain what happens to the missing mass. [1] 58 A 1000-kilogram car traveling due east at 15 meters per second is hit from behind and receives a forward impulse of 6000 newton-seconds. Determine the magnitude of the car s change in momentum due to this impulse. [1] 61 An FM radio station broadcasts its signal at a frequency of 9.15 107 hertz. Determine the wavelength of the signal in air. [1] Physics Jan. 06 [11] [OVER] Part C Answer all questions in this part. Directions (62 74): Record your answers in the spaces provided in your answer booklet. Base your answers to questions 62 through 64 on the information below. A projectile is fired from the ground with an initial velocity of 250. meters per second at an angle of 60. above the horizontal. 62 On the diagram in your answer booklet, use a protractor and ruler to draw a vector to represent the initial velocity of the projectile. Begin the vector at point P, and use a scale of 1.0 centimeter = 50. meters per second. [2] 63 Determine the horizontal component of the initial velocity. [1] 64 Explain why the projectile has no acceleration in the horizontal direction. [Neglect air friction.] [1] Base your answers to questions 65 through 67 on the information below. An 18-ohm resistor and a 36-ohm resistor are connected in parallel with a 24-volt battery. A single ammeter is placed in the circuit to read its total current. 65 In the space in your answer booklet, draw a diagram of this circuit using symbols from the Reference Tables for Physical Setting/Physics. [Assume the availability of any number of wires of negligible resistance.] [2] 66 Calculate the equivalent resistance of the circuit. [Show all work, including the equation and substitution with units.] [2] 67 Calculate the total power dissipated in the circuit. [Show all work, including the equation and substitution with units.] [2] Physics Jan. 06 [12] Base your answers to questions 68 through 70 on the information below. A periodic wave traveling in a uniform medium has a wavelength of 0.080 meter, an amplitude of 0.040 meter, and a frequency of 5.0 hertz. 68 Determine the period of the wave. [1] 69 On the grid in your answer booklet, starting at point A, sketch a graph of at least one complete cycle of the wave showing its amplitude and period. [2] 70 Calculate the speed of the wave. [Show all work, including the equation and substitution with units.] [2] Base your answers to questions 71 through 74 on the Energy Level Diagram for Hydrogen in the Reference Tables for Physical Settings/Physics. 71 Determine the energy, in electronvolts, of a photon emitted by an electron as it moves from the n = 6 to the n = 2 energy level in a hydrogen atom. [1] 72 Convert the energy of the photon to joules. [1] 73 Calculate the frequency of the emitted photon. [Show all work, including the equation and substitution with units.] [2] 74 Is this the only energy and/or frequency that an electron in the n = 6 energy level of a hydrogen atom could emit? Explain your answer. [1] Physics Jan. 06 [13] The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING Tear Here PHYSICS Thursday, January 26, 2006 1:15 to 4:15 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 . . . . . . . . . . . . 47 . . . . . . . . . . . . 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 18 C Thursday, January 26, 2006 1:15 to 4:15 p.m., only 12 B 2 PHYSICS 35 B 1 PHYSICAL SETTING 20 Male Sex: Female Student . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Total Written Test Score (Maximum Raw Score: 85) Final Score (From Conversion Chart) Teacher. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . School . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 48 ______________________ J 51 Gravitational Potential Energy vs. Vertical Height 49 Gravitational Potential Energy (J) 90. 80. 70. 60. 50. 40. 30. 20. 10. 50 __________________________________________ 0 __________________________________________ 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Vertical Height (m) [a] [OVER] 52 _________________ 56 __________________________________________ 53 __________________________________________ 57 58 ______________________ kg m s 54 59 Normal S 35. Magnet N Air Flint glass 60 ____________________________________________ __________________________________________ 55 __________________________________________ __________________________________________ __________________________________________ 61 _________________ m [b] Part C 62 67 P Horizontal 68 _________________ s 69 63 __________________ m/s Particle Displacement vs. Time 0.060 Particle Displacement (m) 64 __________________________________________ __________________________________________ __________________________________________ __________________________________________ 65 0.040 0.020 0.020 0.040 0.060 70 66 [c] 0.10 0.000 A 0.20 Time (s) 0.30 0.40 71 _________________ eV 72 _________________ J 73 74 ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ [d] FOR TEACHERS ONLY The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PS P PHYSICAL SETTING/PHYSICS Thursday, January 26, 2006 1:15 to 4:15 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. Visit the site http://www.emsc.nysed.gov/osa/ and select the link Latest Information for any recently posted information regarding this examination. This site should be checked before the rating process for this examination begins and at least one more time before the final scores for the examination are recorded. Part A and Part B 1 Allow 1 credit for each correct response. Part A Part B 1 1 . . . . . 2. . . . . 13 . . . . .3. . . . . 25 . . . . .4. . . . . 36 . . . . .3. . . . . 42 . . . . .2. . . . . 2 . . . . . 1. . . . . 14 . . . . .3. . . . . 26 . . . . .2. . . . . 37 . . . . .1. . . . . 43 . . . . .2. . . . . 3 . . . . . 3. . . . . 15 . . . . .3. . . . . 27 . . . . .2. . . . . 38 . . . . .3. . . . . 44 . . . . .4. . . . . 4 . . . . . 3. . . . . 16 . . . . .2. . . . . 28 . . . . .4. . . . . 39 . . . . .2. . . . . 45 . . . . .4. . . . . 5 . . . . . 2. . . . . 17 . . . . .1. . . . . 29 . . . . .1. . . . . 40 . . . . .1. . . . . 46 . . . . .3. . . . . 6 . . . . . 3. . . . . 18 . . . . .3. . . . . 30 . . . . .3. . . . . 41 . . . . .1. . . . . 47 . . . . .3. . . . . 7 . . . . . 3. . . . . 19 . . . . .4. . . . . 31 . . . . .2. . . . . 8 . . . . . 1. . . . . 20 . . . . .2. . . . . 32 . . . . .4. . . . . 9 . . . . .4. . . . . 21 . . . . .1. . . . . 33 . . . . .4. . . . . 10 . . . . .1. . . . . 22 . . . . .2. . . . . 34 . . . . .1. . . . . 11 . . . . .2. . . . . 23 . . . . .4. . . . . 35 . . . . .2. . . . . 12 . . . . .1. . . . . 24 . . . . .3. . . . . 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 Administering and 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 checkmark 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, January 26, 2006. 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] PHYSICAL SETTING/PHYSICS continued 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 48 Allow 1 credit for 55 J. 49 Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 2-credit responses: PE = mgh PE = mgh PE m= gh m= m= 25 J ( 9.81m/s2 ) (1.0 m ) or 55 J ( 2.25 m ) ( 9.81m/s2 ) m = 2.5 kg m = 2.5 kg or 2.55 kg Allow credit for an answer that is consistent with the student s response to question 48. [4] PHYSICAL SETTING/PHYSICS continued 50 Allow 1 credit. Acceptable responses include, but are not limited to: weight of object or weight mg force Fg 51 Allow 1 credit for drawing a line that would represent the relationship between gravitational potential energy and vertical height for an object having a greater mass. The line must be straight, with a slope steeper than that of the given line. Example of a 1-credit response: Gravitational Potential Energy vs. Vertical Height Gravitational Potential Energy (J) 90. 80. 70. 60. 50. 40. 30. 20. 10. 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Vertical Height (m) 52 Allow 1 credit for 55 ( 2 ). [5] 4.0 PHYSICAL SETTING/PHYSICS continued 53 Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: n1 sin 1 = n2 sin 2 sin 2 = sin 2 = n1 sin 1 n2 (1.00 )( sin 55 ) = 0.493 1.66 2 = 29.6 or 30. Allow credit for an answer that is consistent with the student s response to question 52. 54 Allow 1 credit for drawing the refracted ray at an angle of 30. ( 2 ). Example of a 1-credit response: Normal Air 35 Flint glass Allow credit for an answer that is consistent with the student s response to question 53. 55 Allow 1 credit for stating what would happen to light from the incident ray that is not refracted or absorbed. Acceptable responses include, but are not limited to: reflected scattered [6] PHYSICAL SETTING/PHYSICS continued 2 56 Allow 1 credit for indicating that a feather does not accelerate at 9.81 meters per second when dropped near the surface of Earth because the net force is less than Fg. Acceptable responses include, but are not limited to: Air friction acts on the feather. The feather is not in free fall. 57 Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: Ff = FN FN = Ff 39 N FN = .05 FN = 780 N 58 Allow 1 credit for 6000 kg m . s 59 Allow a maximum of 2 credits, allocated as follows: Allow 1 credit for drawing four field lines that do not cross and are closest together at the poles. Allow 1 credit for four field lines drawn from N to S. Examples of 2-credit responses: S Magnet N or [7] S Magnet N PHYSICAL SETTING/PHYSICS continued 60 Allow 1 credit for indicating that mass is converted into energy. 61 Allow 1 credit for 3.28 m or 3.3 m. [8] PHYSICAL SETTING/PHYSICS continued Part C 62 Allow a maximum of 2 credits, allocated as follows: Allow 1 credit for a length of 5.0 cm ( 0.2 cm) and an arrow. Allow 1 credit for an angle above the horizontal of 60. ( 2 ). 25 0m /s Example of a 2-credit response: 60 P Horizontal 63 Allow 1 credit for 125 m/s ( 10 m/s). Allow credit for an answer that is consistent with the student s response to question 62. 64 Allow 1 credit for explaining why the projectile has no acceleration in the horizontal direction. Acceptable responses include, but are not limited to: no force on object in horizontal direction The only force is vertical. Gravity acts only vertically. [9] PHYSICAL SETTING/PHYSICS continued 65 Allow a maximum of 2 credits, allocated as follows: Allow 1 credit for drawing a parallel circuit containing two resistors and a battery. Note: Do not allow this credit if the student draws a cell instead of a battery. Allow 1 credit for correct placement of the ammeter. Example of a 2-credit response: A 66 Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: 1 1 1 = + Req R1 R2 1 1 1 = + Req 18 36 Req = 12 Allow credit for an answer that is consistent with the student s response to question 65. [10] PHYSICAL SETTING/PHYSICS continued 67 Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 2-credit responses: I = V2 P= R ( 24 V ) P= 12 P = 48 W or 2 V 24 V = = 2A R 12 and P = VI P = ( 24 V )( 2 A ) P = 48 W Allow credit for an answer that is consistent with the student s response to question 66. 68 Allow 1 credit for 0.20 s or 1 s. 5 [11] PHYSICAL SETTING/PHYSICS continued 69 Allow a maximum of 2 credits, allocated as follows: Allow 1 credit for correct amplitude 0.3 grid space. Allow 1 credit for correct period 0.3 grid space. Example of a 2-credit response: Particle Displacement vs. Time Particle Displacement (m) 0.060 0.040 0.020 0.10 0.000 0.020 A 0.20 0.30 0.40 Time (s) 0.040 0.060 Note: Allow credit for any periodic wave form (e.g., square or triangular) that meets these criteria. Allow credit for an answer that is consistent with the student s response to question 68. 70 Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Examples of 2-credit responses: v= v = f v = ( 5.0 Hz )( 0.080 m ) v = 0.40 m/s or d t 0.080 m v= 0.2 s v = .4 m/s [12] PHYSICAL SETTING/PHYSICS concluded 71 Allow 1 credit for 3.02 eV. 72 Allow 1 credit for 4.83 10 19 J. Allow credit for a response that is consistent with the student s response to question 71. 73 Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide. Example of a 2-credit response: E = hf f = E h 4.83 10 19 J f = 6.63 10 34 J s f = 7.29 1014 Hz Allow credit for an answer that is consistent with the student s response to question 72. 74 Allow 1 credit for explaining why this is not the only energy and/or frequency that an electron in the n = 6 energy level of a hydrogen atom could emit. Acceptable responses include, but are not limited to: No, the n = 6 level can return to any of the 5 lower energy levels. No, the electron can drop to many different energy levels. The electron can fall from n = 6 to any other level between n = 5 and n = 1. 6 5 6 4 6 3 6 1 Note: Do not allow credit for no without a correct explanation. [13] Regents Examination in Physical Setting/Physics January 2006 Chart for Converting Total Test Raw Scores to Final Examination Scores (Scaled Scores) The Chart for Determining the Final Examination Score for the January 2006 Regents Examination in Physical Setting/Physics will be posted on the Department s web site http://www.emsc.nysed.gov/osa/ on Thursday, January 26, 2006. 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. [14] Map to Core Curriculum (Corrected Edition February 28, 2006) January 2006 Physical Setting/Physics Question Numbers Key Ideas Part A Part B Part C 63,66,67,68,70,72, 73 Standard 1 Math Key Idea 1 1,2,5,8,9,10,11,12,14,15, 16,17,19,20,21,23,24,26 45,48,49,53,57,58,61 Math Key Idea 2 22 38 Math Key Idea 3 Sci. Inq. Key Idea 1 Sci. Inq. Key Idea 2 Sci. Inq. Key Idea 3 55 27,31 40,42,44,50,51 74 Eng. Des. Key Idea 1 Standard 2 Key Idea 1 Key Idea 2 Standard 6 Key Idea 1 Key Idea 2 Key Idea 3 36 Key Idea 4 Key Idea 5 Key Idea 6 Standard 7 Key Idea 1 Key Idea 2 Standard 4 Process Skills 4.1 39,41,59,60 65 4.3 52,54 69 5.1 38,40,45,46,56,57,58 62,63,64 5.3 47 71 Standard 4 4.1 15,16,17,18,19,20,21,22, 23,24,25,26 37,39,41,44,48,49,50, 51 65,66,67 4.3 28,29,30,31,32,34 52,53,54,55,61 68,69,70 1,2,3,4,5,6,7,8,9,10,11, 38,40,43,45,46,56,57, 58,59 62,63,64 12,13,14,27 33,35 42,47,60 71,72,73,74 5.1 5.3 [15]

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