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Physical Setting / Physics - New York Regents June 2010 Exam

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Part A
Answer all questions in this part.
     Directions (1–35): For each statement or question, write in your answer booklet the number of the word
or expression that, of those given, best completes the statement or answers the question.

1 A baseball player runs 27.4 meters from the
  batter’s box to first base, overruns first base by
  3.0 meters, and then returns to first base.
  Compared to the total distance traveled by the
  player, the magnitude of the player’s total
  displacement from the batter’s box is
  (1) 3.0 m shorter          (3) 3.0 m longer
  (2) 6.0 m shorter          (4) 6.0 m longer
Answer: 2

2 A motorboat, which has a speed of 5.0 meters
  per second in still water, is headed east as it
  crosses a river flowing south at 3.3 meters per
  second. What is the magnitude of the boat’s
  resultant velocity with respect to the starting
  point?
  (1) 3.3 m/s               (3) 6.0 m/s
  (2) 5.0 m/s               (4) 8.3 m/s
Answer: 3

3 A car traveling on a straight road at 15.0 meters
  per second accelerates uniformly to a speed of
  21.0 meters per second in 12.0 seconds. The
  total distance traveled by the car in this
  12.0-second time interval is
  (1) 36.0 m                 (3) 216 m
  (2) 180. m                 (4) 252 m
Answer: 3


4 A 0.149-kilogram baseball, initially moving at
  15 meters per second, is brought to rest in
  0.040 second by a baseball glove on a catcher’s
  hand. The magnitude of the average force
  exerted on the ball by the glove is
  (1) 2.2 N                 (3) 17 N
  (2) 2.9 N                 (4) 56 N
Answer: 4

5 Which body is in equilibrium?
  (1) a satellite moving around Earth in a circular
      orbit
  (2) a cart rolling down a frictionless incline
  (3) an apple falling freely toward the surface of
      Earth
  (4) a block sliding at constant velocity across a
      tabletop
Answer: 4

6 As shown in the diagram below, a student
  standing on the roof of a 50.0-meter-high
  building kicks a stone at a horizontal speed of
  4.00 meters per second.
How much time is required for the stone to
reach the level ground below? [Neglect friction.]
(1) 3.19 s                (3) 10.2 s
(2) 5.10 s                (4) 12.5 s
Answer: 1

7 On the surface of Earth, a spacecraft has a mass
  of 2.00 × 104 kilograms. What is the mass of the
  spacecraft at a distance of one Earth radius
  above Earth’s surface?
  (1) 5.00 × 103 kg        (3) 4.90 × 104 kg
  (2) 2.00 × 104 kg        (4) 1.96 × 105 kg
Answer: 2

8 A student pulls a 60.-newton sled with a force
  having a magnitude of 20. newtons. What is the
  magnitude of the force that the sled exerts on the
  student?
  (1) 20. N                 (3) 60. N
  (2) 40. N                 (4) 80. N
Answer: 1

9 The data table below lists the mass and speed of
  four different objects.
                  Data Table
    Object       Mass (kg)     Speed (m/s)
       A             4.0            6.0
       B             6.0            5.0
       C             8.0            3.0
       D           16.0             1.5
  Which object has the greatest inertia?
  (1) A                    (3) C
  (2) B                    (4) D
Answer: 4

10 The diagram below shows a horizontal 12-newton force being applied to two blocks, A and B,
   initially at rest on a horizontal, frictionless surface. 
   Block A has a mass of 1.0 kilogram and block B has a mass of 2.0 kilograms.
The magnitude of the acceleration of block B is
(1) 6.0 m/s2            (3) 3.0 m/s2
(2) 2.0 m/s2            (4) 4.0 m/s2
Answer: 4

11 A ball is thrown vertically upward with an initial
   velocity of 29.4 meters per second. What is the
   maximum height reached by the ball? [Neglect
   friction.]
   (1) 14.7 m                 (3) 44.1 m
   (2) 29.4 m                 (4) 88.1 m
Answer: 3

12 The diagram below represents a mass, m, being
   swung clockwise at constant speed in a horizontal
   circle.
At the instant shown, the centripetal force acting
on mass m is directed toward point
(1) A                     (3) C
(2) B                     (4) D
Answer: 3

13 A 3.1-kilogram gun initially at rest is free to
   move. When a 0.015-kilogram bullet leaves the
   gun with a speed of 500. meters per second, what
   is the speed of the gun?
   (1) 0.0 m/s               (3) 7.5 m/s
   (2) 2.4 m/s               (4) 500. m/s
Answer: 2

14 Four projectiles, A, B, C, and D, were launched from, and returned to, level ground. The data table below
   shows the initial horizontal speed, initial vertical speed, and time of flight for each projectile.
                                                 Data Table
                                 Initial Horizontal     Initial Vertical
                Projectile                                                   Time of Flight (s)
                                    Speed (m/s)          Speed (m/s)
                     A                  40.0                  29.4                   6.00
                     B                  60.0                  19.6                   4.00
                     C                  50.0                  24.5                   5.00
                     D                  80.0                  19.6                   4.00
   Which projectile traveled the greatest horizontal distance? [Neglect friction.]
   (1) A                                           (3) C
   (2) B                                           (4) D
Answer: 4

15 A wound spring provides the energy to propel a toy car across a level floor. At time ti ,the car is moving at
   speed vi across the floor and the spring is unwinding, as shown below. At time tf , the spring has fully
   unwound and the car has coasted to a stop.
Which statement best describes the transformation of energy that occurs between times ti and tf ?
(1) Gravitational potential energy at ti is converted to internal energy at tf .
(2) Elastic potential energy at ti is converted to kinetic energy at tf .
(3) Both elastic potential energy and kinetic energy at ti are converted to internal energy at tf .
(4) Both kinetic energy and internal energy at ti are converted to elastic potential energy at tf .
Answer: 3

16 A 75-kilogram bicyclist coasts down a hill at a constant speed of 12 meters per second. What is the kinetic
   energy of the bicyclist?
   (1) 4.5 × 102 J                                  (3) 5.4 × 103 J
   (2) 9.0 × 102 J                                  (4) 1.1 × 104 J
Answer: 3

17 The diagram below represents a 155-newton box
   on a ramp. Applied force F causes the box to slide
   from point A to point B.
What is the total amount of gravitational
potential energy gained by the box?
(1) 28.4 J               (3) 868 J
(2) 279 J                (4) 2740 J
Answer: 2

18 An electric heater operating at 120. volts draws
   8.00 amperes of current through its 15.0 ohms of
   resistance. The total amount of heat energy
   produced by the heater in 60.0 seconds is
   (1) 7.20 × 103 J         (3) 8.64 × 104 J
   (2) 5.76 × 104 J         (4) 6.91 × 106 J
Answer: 2

19 Magnetic fields are produced by particles that are
   (1) moving and charged
   (2) moving and neutral
   (3) stationary and charged
   (4) stationary and neutral
Answer: 1

20 A charge of 30. coulombs passes through a
   24-ohm resistor in 6.0 seconds. What is the
   current through the resistor?
   (1) 1.3 A                 (3) 7.5 A
   (2) 5.0 A                 (4) 4.0 A
Answer: 2

21 What is the magnitude of the electrostatic force
   between two electrons separated by a distance of
   1.00 × 10–8 meter?
   (1) 2.56 × 10–22 N      (3) 2.30 × 10–12 N
   (2) 2.30 × 10–20 N      (4) 1.44 × 10–1 N
Answer: 3

22 The diagram below represents the electric field
   surrounding two charged spheres, A and B.
What is the sign of the charge of each sphere?
(1) Sphere A is positive and sphere B is negative.
(2) Sphere A is negative and sphere B is positive.
(3) Both spheres are positive.
(4) Both spheres are negative.
Answer: 2

23 Which circuit has the smallest equivalent
   resistance?

Answer: 3

Base your answers to questions 24 through 26 on the information and diagram below.
            A longitudinal wave moves to the right through a uniform medium, as shown below.
          Points A, B, C, D, and E represent the positions of particles of the medium.
24 Which diagram best represents the motion of the particle at position C as the wave moves to the right?

Answer: 4

25 The wavelength of this wave is equal to the distance between points
   (1) A and B                                     (3) B and C
   (2) A and C                                     (4) B and E
Answer: 2

26 The energy of this wave is related to its
   (1) amplitude                               (3) speed
   (2) period                                  (4) wavelength
Answer: 1

27 A ray of monochromatic yellow light ( f = 5.09 × 1014 Hz) passes from water through flint glass and into
   medium X, as shown below.
The absolute index of refraction of medium X is
(1) less than 1.33                             (3) greater than 1.52 and less than 1.66
(2) greater than 1.33 and less than 1.52       (4) equal to 1.66
Answer: 4

28 A light ray traveling in air enters a second
   medium and its speed slows to 1.71 × 108 meters
   per second. What is the absolute index of
   refraction of the second medium?
   (1) 1.00                  (3) 1.75
   (2) 0.570                 (4) 1.94
Answer: 3

29 Playing a certain musical note on a trumpet
   causes the spring on the bottom of a nearby
   snare drum to vibrate. This phenomenon is an
   example of
   (1) resonance           (3) reflection
   (2) refraction          (4) diffraction
Answer: 1

30 In a vacuum, all electromagnetic waves have the
   same
   (1) speed                (3) frequency
   (2) phase                (4) wavelength
Answer: 1

31 A particle that is composed of two up quarks and
   one down quark is a
   (1) meson                 (3) proton
   (2) neutron               (4) positron
Answer: 3

32 A helium atom consists of two protons, two
   electrons, and two neutrons. In the helium atom,
   the strong force is a fundamental interaction
   between the
   (1) electrons, only
   (2) electrons and protons
   (3) neutrons and electrons
   (4) neutrons and protons
Answer: 4

33 What total mass must be converted into energy
   to produce a gamma photon with an energy of
   1.03 × 10–13 joule?
   (1) 1.14 × 10–30        (3) 3.09 × 10–5
   (2) 3.43 × 10–22        (4) 8.75 × 1029
Answer: 1

34 Compared to the mass and charge of a proton,
   an antiproton has
   (1) the same mass and the same charge
   (2) greater mass and the same charge
   (3) the same mass and the opposite charge
   (4) greater mass and the opposite charge
Answer: 3

   Note that question 35 has only three
   choices.
35 As viewed from Earth, the light from a star has
   lower frequencies than the light emitted by the
   star because the star is
   (1) moving toward Earth
   (2) moving away from Earth
   (3) stationary
Answer: 2


Part B–1
Answer all questions in this part.
    Directions (36–50): For each statement or question, write in your answer booklet the number of the word
or expression that, of those given, best completes the statement or answers the question.

36 The total work done in lifting a typical high
   school physics textbook a vertical distance of
   0.10 meter is approximately
   (1) 0.15 J               (3) 15 J
   (2) 1.5 J                (4) 150 J
Answer: 2

37 Which electrical unit is equivalent to one joule?
   (1) volt per meter         (3) volt per coulomb
   (2) ampere•volt            (4) coulomb•volt
Answer: 4

38 A small electric motor is used to lift a
   0.50-kilogram mass at constant speed. If the
   mass is lifted a vertical distance of 1.5 meters in
   5.0 seconds, the average power developed by the
   motor is
   (1) 0.15 W                  (3) 3.8 W
   (2) 1.5 W                   (4) 7.5 W
Answer: 2

39 A ball is dropped from the top of a cliff. Which
   graph best represents the relationship between
   the ball’s total energy and elapsed time as the
   ball falls to the ground? [Neglect friction.]

Answer: 4

40 A child, starting from rest at the top of a
   playground slide, reaches a speed of 7.0 meters
   per second at the bottom of the slide. What is
   the vertical height of the slide? [Neglect
   friction.]
   (1) 0.71 m               (3) 2.5 m
   (2) 1.4 m                (4) 3.5 m
Answer: 3

41 The graph below represents the relationship
   between the current in a metallic conductor and
   the potential difference across the conductor at
   constant temperature.
The resistance of the conductor is
(1) 1.0 Ω                (3) 0.50 Ω
(2) 2.0 Ω                (4) 4.0 Ω
Answer: 2

42 A student throws a baseball vertically upward and then catches it. If vertically upward is considered to be
   the positive direction, which graph best represents the relationship between velocity and time for the
   baseball? [Neglect friction.]

Answer: 4

43 A 5.0-kilogram sphere, starting from rest, falls freely 22 meters in 3.0 seconds near the surface of a planet.
   Compared to the acceleration due to gravity near Earth’s surface, the acceleration due to gravity near the
   surface of the planet is approximately
   (1) the same                                       (3) one-half as great
   (2) twice as great                                 (4) four times as great
Answer: 3

44 A 15.0-kilogram mass is moving at 7.50 meters per second on a horizontal, frictionless surface. What is the
   total work that must be done on the mass to increase its speed to 11.5 meters per second?
   (1) 120. J                                     (3) 570. J
   (2) 422 J                                      (4) 992 J
Answer: 3

45 The circuit diagram below represents four resistors connected to a 12-volt source.
What is the total current in the circuit?
(1) 0.50 A                                  (3) 8.6 A
(2) 2.0 A                                   (4) 24 A
Answer: 1

46 Which graph best represents the relationship between the power expended by a resistor that obeys Ohm’s
   Law and the potential difference applied to the resistor?

Answer: 4

47 The distance between an electron and a proton is varied. Which pair of graphs best represents the
   relationship between gravitational force, Fg, and distance, r, and the relationship between electrostatic
   force, Fe, and distance, r, for these particles?

Answer: 1

48 The diagram below represents a periodic wave traveling through a uniform medium.
If the frequency of the wave is 2.0 hertz, the speed of the wave is
(1) 6.0 m/s                                      (3) 8.0 m/s
(2) 2.0 m/s                                      (4) 4.0 m/s
Answer: 3

49 The diagram below represents a light ray reflecting from a plane mirror.
The angle of reflection for the light ray is
(1) 25°                                        (3) 50.°
(2) 35°                                        (4) 65°
Answer: 1

50 The diagram below shows a standing wave in a string clamped at each end.
What is the total number of nodes and antinodes in the standing wave?
(1) 3 nodes and 2 antinodes                   (3) 5 nodes and 4 antinodes
(2) 2 nodes and 3 antinodes                   (4) 4 nodes and 5 antinodes
Answer: 3


Part B–2
Answer all questions in this part.
Directions (51–60): Record your answers in the spaces provided in your answer booklet.

Base your answers to questions 51 through 53 on the information and graph below.
             A machine fired several projectiles at the same angle, θ, above the horizontal. Each
          projectile was fired with a different initial velocity, vi. The graph below represents the
          relationship between the magnitude of the initial vertical velocity, viy, and the magnitude
          of the corresponding initial velocity, vi, of these projectiles.
    Initial Vertical Velocity vs. Initial Velocity
51 Determine the magnitude of the initial vertical velocity of the projectile, viy, when the magnitude of its
   initial velocity, vi, was 40. meters per second. [1]
Answer: MODEL ANSWER GIVEN BELOW
51 [1] Allow 1 credit for 25 m/s ± 1 m/s.


52 Determine the angle, θ, above the horizontal at which the projectiles were fired. [1]
Answer: MODEL ANSWER GIVEN BELOW
52 [1] Allow 1 credit for 39° ± 2°.
         Note: Allow credit for an answer that is consistent with the student’s response to question 51.


53 Calculate the magnitude of the initial horizontal velocity of the projectile, vix, when the magnitude of its
   initial velocity, vi, was 40. meters per second. [Show all work, including the equation and substitution with
   units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
53 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Examples of 2-credit responses:
Note: Allow credit for an answer that is consistent with the student’s response to question 51 or 52.


54 A student makes a simple pendulum by attaching a mass to the free end of a 1.50-meter length of string
   suspended from the ceiling of her physics classroom. She pulls the mass up to her chin and releases it from
   rest, allowing the pendulum to swing in its curved path. Her classmates are surprised that the mass doesn’t
   reach her chin on the return swing, even though she does not move. Explain why the mass does not have
   enough energy to return to its starting position and hit the girl on the chin. [1]
Answer: MODEL ANSWER GIVEN BELOW
54 [1] Allow 1 credit. Acceptable responses include, but are not limited to:
            — friction
            — Some of the gravitational energy of the mass was converted into internal energy.
              Therefore, it could not return to its original height.
            — air resistance


55 A 6-ohm resistor and a 4-ohm resistor are
   connected in series with a 6-volt battery in an
   operating electric circuit. A voltmeter is
   connected to measure the potential difference
   across the 6-ohm resistor.
   In the space in your answer booklet, draw a
   diagram of this circuit including the battery,
   resistors, and voltmeter using symbols from the
   Reference Tables for Physical Setting/Physics.
   Label each resistor with its value. [Assume the
   availability of any number of wires of negligible
   resistance.] [2]
Answer: MODEL ANSWER GIVEN BELOW
55 [2] Allow a maximum of 2 credits, allocated as follows:
         • Allow 1 credit for drawing a series circuit containing two resistors and a battery.
         • Allow 1 credit for correct placement of the voltmeter.
         Example of a 2-credit response:
Note: Allow credit even if the student draws a cell instead of a battery and/or labels only one
      resistor with its value.


56 When a spring is compressed 2.50 × 10–2 meter
   from its equilibrium position, the total potential
   energy stored in the spring is 1.25 × 10–2 joule.
   Calculate the spring constant of the spring.
   [Show all work, including the equation and
   substitution with units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
56 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Example of a 2-credit response:


   Base your answers to questions 57 and 58 on the
information below.
       A 3.50-meter length of wire with a cross-
   sectional area of 3.14 × 10–6 meter2 is at
   20° Celsius. The current in the wire is
   24.0 amperes when connected to a 1.50-volt
   source of potential difference.
 57 Determine the resistance of the wire. [1]
Answer: MODEL ANSWER GIVEN BELOW
57 [1] Allow 1 credit for 6.25 × 10–2 Ω .


58 Calculate the resistivity of the wire. [Show all
   work, including the equation and substitution
   with units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
58 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Example of a 2-credit response:
Note: Allow credit for an answer that is consistent with the student’s response to question 57.


   Base your answers to questions 59 and 60 on the
information below.
      In an experiment, a 0.028-kilogram rubber
   stopper is attached to one end of a string. A
   student whirls the stopper overhead in a
   horizontal circle with a radius of 1.0 meter.
   The stopper completes 10. revolutions in
   10. seconds.
59 Determine the speed of the whirling stopper. [1]
Answer: MODEL ANSWER GIVEN BELOW
59 [1] Allow 1 credit for 6.3 m/s.


60 Calculate the magnitude of the centripetal force
   on the whirling stopper. [Show all work,
   including the equation and substitution with
   units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
60 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Example of a 2-credit response:
Note: Allow credit for an answer that is consistent with the student’s response to question 59.



Part C
Answer all questions in this part.
Directions (61–75): Record your answers in the spaces provided in your answer booklet.

  Base your answers to questions 61 through 64 on
the information below.
      In a laboratory investigation, a student
   applied various downward forces to a vertical
   spring. The applied forces and the corres-
   ponding elongations of the spring from its
   equilibrium position are recorded in the data
   table below.
                     Data Table
          Force (N)      Elongation (m)
               0                  0
               0.5                0.010
               1.0                0.018
               1.5                0.027
               2.0                0.035
               2.5                0.046
       Directions (61–63): Construct a graph on the
    grid in your answer booklet, following the
    directions below.
 61 Mark an appropriate scale on the axis labeled
    “Force (N).” [1]
Answer: MODEL ANSWER GIVEN BELOW
61 [1] Allow 1 credit for an appropriate linear scale.


62 Plot the data points for force versus elongation.
   [1]
Answer: MODEL ANSWER GIVEN BELOW
62 [1] Allow 1 credit for plotting all points accurately ± 0.3 grid space.


63 Draw the best-fit line or curve. [1]
Answer: MODEL ANSWER GIVEN BELOW
63 [1] Allow 1 credit for drawing the best-fit line or curve consistent with the student’s responses to
       questions 61 and 62.
         Example of a 3-credit graph for questions 61–63:
                   Force vs. Elongation


64 Using your graph, calculate the spring constant of
   this spring. [Show all work, including the
   equation and substitution with units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
64 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Examples of 2-credit responses:
Note: Allow credit for an answer that is consistent with the student’s graph.
      The slope may be determined by substitution of values from the data table only if the
      data points are on the best-fit line or if the student failed to draw a best-fit line.


  Base your answers to questions 65 through 68 on
the information below.
      An ice skater applies a horizontal force to a
   20.-kilogram block on frictionless, level ice,
   causing the block to accelerate uniformly at
   1.4 meters per second2 to the right. After the
   skater stops pushing the block, it slides onto a
   region of ice that is covered with a thin layer
   of sand. The coefficient of kinetic friction
   between the block and the sand-covered ice is
   0.28.
 65 Calculate the magnitude of the force applied to
    the block by the skater. [Show all work, including
    the equation and substitution with units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
65 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Example of a 2-credit response:


66 On the diagram in your answer booklet, starting
   at point A, draw a vector to represent the force
   applied to the block by the skater. Begin the
   vector at point A and use a scale of
   1.0 centimeter = 5.0 newtons. [1]
Answer: MODEL ANSWER GIVEN BELOW
66 [1] Allow 1 credit for a vector 5.6 cm ± 0.2 cm long parallel to the surface of the ice and pointing to
       the right.
         Example of a 1-credit response:
Note: Allow credit for an answer that is consistent with the student’s response to question 65.
      The vector need not start at point A to receive this credit.


67 Determine the magnitude of the normal force
   acting on the block. [1]
Answer: MODEL ANSWER GIVEN BELOW
67 [1] Allow 1 credit for 2.0 × 102 N or 196 N.


68 Calculate the magnitude of the force of friction
   acting on the block as it slides over the
   sand-covered ice. [Show all work, including the
   equation and substitution with units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
68 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Example of a 2-credit response:
Note: Allow credit for an answer that is consistent with the student’s response to question 67.


  Base your answers to questions 69 through 71 on
the information and diagram below.
      A monochromatic light ray (f = 5.09 × 1014 Hz)
   traveling in air is incident on the surface of a
   rectangular block of Lucite.
69 Measure the angle of incidence for the light ray
   to the nearest degree. [1]
Answer: MODEL ANSWER GIVEN BELOW
69 [1] Allow 1 credit for 50.° ± 2°.


70 Calculate the angle of refraction of the light ray
   when it enters the Lucite block. [Show all work,
   including the equation and substitution with
   units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
70 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
         Example of a 2-credit response:
Note: Allow credit for an answer that is consistent with the student’s response to question 69.


71 What is the angle of refraction of the light ray as
   it emerges from the Lucite block back into air?
   [1]
Answer: MODEL ANSWER GIVEN BELOW
71 [1] Allow 1 credit for 50.°.
         Note: Allow credit for an answer that is consistent with the student’s response to question 69 or 70.


  Base your answers to questions 72 through 75 on
the information below.
      As a mercury atom absorbs a photon of
   energy, an electron in the atom changes from
   energy level d to energy level e.
 72 Determine the energy of the absorbed photon in
    electronvolts. [1]
Answer: MODEL ANSWER GIVEN BELOW
72 [1] Allow 1 credit for 1.24 eV.


73 Express the energy of the absorbed photon in
   joules. [1]
Answer: MODEL ANSWER GIVEN BELOW
73 [1] Allow 1 credit for 1.98 × 10−19 J or an answer that is consistent with the student’s response to
       question 72.


74 Calculate the frequency of the absorbed photon.
   [Show all work, including the equation and
   substitution with units.] [2]
Answer: MODEL ANSWER GIVEN BELOW
74 [2] Allow a maximum of 2 credits. Refer to Scoring Criteria for Calculations in this rating guide.
        Example of a 2-credit response:
Note: Allow credit for an answer that is consistent with the student’s response to question 73.


75 Based on your calculated value of the frequency
   of the absorbed photon, determine its
   classification in the electromagnetic spectrum.
   [1]
Answer: MODEL ANSWER GIVEN BELOW
75 [1] Allow 1 credit for infrared or an answer that is consistent with the student’s response to
       question 74.



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