NY Regents
January 2009, Part 2
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21 The diagram below represents a 0.5-kilogram bar magnet and a 0.7-kilogram bar magnet with a distance of 0.2 meter between their centers.
Which statement best describes the forces between the bar magnets?
(1) Gravitational force and magnetic force are both repulsive.
(2) Gravitational force is repulsive and magnetic force is attractive.
(3) Gravitational force is attractive and magnetic force is repulsive.
(4) Gravitational force and magnetic force are both attractive.
22 A dampened fingertip rubbed around the rim of a crystal stemware glass causes the glass to vibrate and produce a musical note. This effect is due to
(1) resonance
(2) refraction
(3) reflection
(4) rarefaction
23 Which type of wave requires a material medium through which to travel?
(1) radio wave
(2) microwave
(3) light wave
(4) mechanical wave
24 Compared to the speed of a sound wave in air, the speed of a radio wave in air is
(1) less
(2) greater
(3) the same
25 If the amplitude of a wave is increased, the frequency of the wave will
(1) decrease
(2) increase
(3) remain the same
26 Which unit is equivalent to meters per second?
(1) Hz•s
(2) s/Hz
(3) Hz•m
(4) m/Hz
27 Which characteristic is the same for every color of light in a vacuum?
(1) energy
(2) frequency
(3) speed
(4) period
28 What is the speed of light (f = 5.09 × 10
14
Hz) in flint glass?
(1) 1.81 × 10
8
m/s
(2) 1.97 × 10
8
m/s
(3) 3.00 × 10
8
m/s
(4) 4.98 × 10
8
m/s
29 While playing, two children create a standing wave in a rope, as shown in the diagram below. A third child participates by jumping the rope.
What is the wavelength of this standing wave?
(1) 2.15 m
(2) 4.30 m
(3) 6.45 m
(4) 8.60 m
30 A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a television. This communication from the remote control to the television illustrates that electromagnetic radiation
(1) is a longitudinal wave
(2) possesses energy inversely proportional to its frequency
(3) diffracts and accelerates in air
(4) transfers energy without transferring mass
31 A wave of constant wavelength diffracts as it passes through an opening in a barrier. As the size of the opening is increased, the diffraction effects
(1) decrease
(2) increase
(3) remain the same
32 A car’s horn produces a sound wave of constant frequency. As the car speeds up going away from a stationary spectator, the sound wave detected by the spectator
(1) decreases in amplitude and decreases in frequency
(2) decreases in amplitude and increases in frequency
(3) increases in amplitude and decreases in frequency
(4) increases in amplitude and increases in frequency
33 An electron in a mercury atom drops from energy level
f
to energy level
c
by emitting a photon having an energy of
(1) 8.20 eV
(2) 5.52 eV
(3) 2.84 eV
(4) 2.68 eV
34 If an object has a net negative charge of 4.0 coulombs, the object possesses
(1) 6.3 × 10
18
more electrons than protons
(2) 2.5 × 10
19
more electrons than protons
(3) 6.3 × 10
18
more protons than electrons
(4) 2.5 × 10
19
more protons than electrons
35 Moving electrons are found to exhibit properties of
(1) particles, only
(2) waves, only
(3) both particles and waves
(4) neither particles nor waves
36 The weight of a typical high school physics student is closest to
(1) 1500 N
(2) 600 N
(3) 120 N
(4) 60 N
37 The diagram below shows a 1.0 × 10
5
-newton truck at rest on a hill that makes an angle of 8.0° with the horizontal.
What is the component of the truck’s weight parallel to the hill?
(1) 1.4 × 10
3
N
(2) 1.0 × 10
4
N
(3) 1.4 × 10
4
N
(4) 9.9 × 10
4
N
38 Which graph best represents the motion of an object in equilibrium?
(1)
(2)
(3)
(4)
39 A wooden crate is pushed at constant speed across a level wooden floor.
Which graph best represents the relationship between the total mechanical energy of the crate and the duration of time the crate is pushed?
(1)
(2)
(3)
(4)
40 A child does 0.20 joule of work to compress the spring in a pop-up toy. If the mass of the toy is 0.010 kilogram, what is the maximum vertical height that the toy can reach after the spring is released?
(1) 20. m
(2) 2.0 m
(3) 0.20 m
(4) 0.020 m
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