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Physical Setting / Physics - New York Regents June 2009 Exam

    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.

Formats Worksheet / Test Paper Quiz Review
: Multiple choice

Your Performance  

1.

1 On a highway, a car is driven 80. kilometers
  during the first 1.00 hour of travel,
  50. kilometers during the next 0.50 hour, and
  40. kilometers in the final 0.50 hour. What is the
  car’s average speed for the entire trip?
  (1) 45 km/h                (3) 85 km/h
  (2) 60. km/h               (4) 170 km/h

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2.

2 The vector diagram below represents the
  horizontal component, FH, and the vertical
  component, FV, of a 24-newton force acting at
  35° above the horizontal.
What are the magnitudes of the horizontal and
vertical components?
(1) FH = 3.5 N and FV = 4.9 N
(2) FH = 4.9 N and FV = 3.5 N
(3) FH = 14  N and FV = 20. N
(4) FH = 20. N and FV = 14 N

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3.

3 Which quantity is a vector?
  (1) impulse              (3) speed
  (2) power                (4) time

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4.

4 A high-speed train in Japan travels a distance of
  300. kilometers in 3.60 × 103 seconds. What is
  the average speed of this train?
  (1) 1.20 × 10–2 m/s       (3) 12.0 m/s
               
  (2) 8.33 × 10–2 m/s         (4) 83.3 m/s

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5.

5 A 25-newton weight falls freely from rest from
  the roof of a building. What is the total distance
  the weight falls in the first 1.0 second?
  (1) 19.6 m                  (3) 4.9 m
  (2) 9.8 m                   (4) 2.5 m

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6.

6 A golf ball is given an initial speed of 20. meters
  per second and returns to level ground. Which
  launch angle above level ground results in the
  ball traveling the greatest horizontal distance?
  [Neglect friction.]
  (1) 60.°                    (3) 30.°
  (2) 45°                     (4) 15°

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7.

   Base your answers to questions 7 and 8 on the
information below.
      A go-cart travels around a flat, horizontal,
   circular track with a radius of 25 meters. The
   mass of the go-cart with the rider is
   200. kilograms. The magnitude of the maximum
   centripetal force exerted by the track on the
   go-cart is 1200. newtons.
  7 What is the maximum speed the 200.-kilogram
    go-cart can travel without sliding off the track?
    (1) 8.0 m/s               (3) 150 m/s
    (2) 12 m/s                (4) 170 m/s

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8.

8 Which change would increase the maximum
  speed at which the go-cart could travel without
  sliding off this track?
  (1) Decrease the coefficient of friction between
       the go-cart and the track.
  (2) Decrease the radius of the track.
  (3) Increase the radius of the track.
  (4) Increase the mass of the go-cart.

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9.

9 A 0.50-kilogram cart is rolling at a speed of
  0.40 meter per second. If the speed of the cart is
  doubled, the inertia of the cart is
  (1) halved                (3) quadrupled
  (2) doubled               (4) unchanged

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10.

10 Two forces, F1 and F2, are applied to a block on a
   frictionless, horizontal surface as shown below.
If the magnitude of the block’s acceleration is
2.0 meters per second2, what is the mass of the
block?
(1) 1 kg                (3) 6 kg
(2) 5 kg                (4) 7 kg

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11.

11 Which body is in equilibrium?
   (1) a satellite orbiting Earth in a circular orbit
   (2) a ball falling freely toward the surface of
       Earth
   (3) a car moving with a constant speed along a
       straight, level road
   (4) a projectile at the highest point in its trajectory

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12.

12 What is the weight of a 2.00-kilogram object on
   the surface of Earth?
   (1) 4.91 N               (3) 9.81 N
   (2) 2.00 N               (4) 19.6 N

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13.

13 A 70.-kilogram cyclist develops 210 watts of
   power while pedaling at a constant velocity of
   7.0 meters per second east. What average force is
   exerted eastward on the bicycle to maintain this
   constant speed?
   (1) 490 N                (3) 3.0 N
   (2) 30. N                (4) 0 N

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14.

14 The gravitational potential energy, with respect
   to Earth, that is possessed by an object is
   dependent on the object’s
   (1) acceleration         (3) position
   (2) momentum             (4) speed

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15.

  Note that question 15 has only three choices.
15 As a ball falls freely toward the ground, its total
   mechanical energy
   (1) decreases
   (2) increases
   (3) remains the same

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16.

16 A spring with a spring constant of 4.0 newtons
   per meter is compressed by a force of
   1.2 newtons. What is the total elastic potential
   energy stored in this compressed spring?
   (1) 0.18 J               (3) 0.60 J
   (2) 0.36 J               (4) 4.8 J

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17.

17 A distance of 1.0 meter separates the centers of
   two small charged spheres. The spheres exert
   gravitational force Fg and electrostatic force Fe on
   each other. If the distance between the spheres’
   centers is increased to 3.0 meters, the
   gravitational force and electrostatic force,
   respectively, may be represented as

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18.

18 The electrical resistance of a metallic conductor
   is inversely proportional to its
   (1) temperature            (3) cross-sectional area
   (2) length                 (4) resistivity

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19.

19 In a simple electric circuit, a 24-ohm resistor is
   connected across a 6.0-volt battery. What is the
   current in the circuit?
   (1) 1.0 A                 (3) 140 A
   (2) 0.25 A                (4) 4.0 A

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20.

20 An operating 100.-watt lamp is connected to a
   120-volt outlet. What is the total electrical energy
   used by the lamp in 60. seconds?
   (1) 0.60 J                 (3) 6.0 × 103 J
   (2) 1.7 J                  (4) 7.2 × 103 J

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21.

21 A beam of electrons is directed into the electric
   field between two oppositely charged parallel
   plates, as shown in the diagram below.
The electrostatic force exerted on the electrons
by the electric field is directed
(1) into the page
(2) out of the page
(3) toward the bottom of the page
(4) toward the top of the page

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22.

22 When two ring magnets are placed on a pencil,
   magnet A remains suspended above magnet B,
   as shown below.
Which statement describes the gravitational
force and the magnetic force acting on magnet A
due to magnet B?
(1) The gravitational force is attractive and the
    magnetic force is repulsive.
(2) The gravitational force is repulsive and the
    magnetic force is attractive.
(3) Both the gravitational force and the mag-
    netic force are attractive.
(4) Both the gravitational force and the mag-
    netic force are repulsive.

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23.

23 Which color of light has a wavelength of
   5.0 × 10–7 meter in air?
   (1) blue                 (3) orange
   (2) green                (4) violet

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24.

24 Which type of wave requires a material medium
   through which to travel?
   (1) sound                (3) television
   (2) radio                (4) x ray

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25.

25 A periodic wave is produced by a vibrating
   tuning fork. The amplitude of the wave would be
   greater if the tuning fork were
   (1) struck more softly
   (2) struck harder
   (3) replaced by a lower frequency tuning fork
   (4) replaced by a higher frequency tuning fork

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26.

26 The sound wave produced by a trumpet has a
   frequency of 440 hertz. What is the distance
   between successive compressions in this sound
   wave as it travels through air at STP?
   (1) 1.5 × 10–6 m          (3) 1.3 m
   (2) 0.75 m                (4) 6.8 × 105 m

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27.

27 The diagram below represents a light ray striking
   the boundary between air and glass.
What would be the angle between this light ray
and its reflected ray?
(1) 30.°               (3) 120.°
(2) 60.°               (4) 150.°

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28.

28 In which way does blue light change as it travels
   from diamond into crown glass?
   (1) Its frequency decreases.
   (2) Its frequency increases.
   (3) Its speed decreases.
   (4) Its speed increases.

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29.

29 The diagram below shows two pulses
   approaching each other in a uniform medium.
Which diagram best represents the super-
position of the two pulses?

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30.

30 Sound waves strike a glass and cause it to shatter.
   This phenomenon illustrates
   (1) resonance             (3) reflection
   (2) refraction            (4) diffraction

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31.

31 An alpha particle consists of two protons and two
   neutrons. What is the charge of an alpha particle?
   (1) 1.25 × 1019 C          (3) 6.40 × 10–19 C
   (2) 2.00 C                 (4) 3.20 × 10–19 C

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32.

32 An electron in the c level of a mercury atom
   returns to the ground state. Which photon
   energy could not be emitted by the atom during
   this process?
   (1) 0.22 eV              (3) 4.86 eV
   (2) 4.64 eV              (4) 5.43 eV

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33.

33 Which phenomenon provides evidence that light
   has a wave nature?
   (1) emission of light from an energy-level
       transition in a hydrogen atom
   (2) diffraction of light passing through a narrow
       opening
   (3) absorption of light by a black sheet of paper
   (4) reflection of light from a mirror

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34.

34 When Earth and the Moon are separated by a
   distance of 3.84 × 108 meters, the magnitude of
   the gravitational force of attraction between
   them is 2.0 × 1020 newtons. What would be the
   magnitude of this gravitational force of attraction
   if Earth and the Moon were separated by a
   distance of 1.92 × 108 meters?
   (1) 5.0 × 1019 N           (3) 4.0 × 1020 N
   (2) 2.0 × 1020 N           (4) 8.0 × 1020 N

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35.

35 The particles in a nucleus are held together
   primarily by the
   (1) strong force        (3) electrostatic force
   (2) gravitational force (4) magnetic force

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