PhysicsLAB NY Regents Exams
August 2002, Part 1

Constants        Formulas

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1 A net force of 25 newtons is applied horizontally to a 10.-kilogram block resting on a table. What is the magnitude of the acceleration of the block?

(1) 0.0 m/s2
(2) 0.26 m/s2
(3) 0.40 m/s2
(4) 2.5 m/s2

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2 The speed of a car is increased uniformly from 20. meters per second to 30. meters per second in 4.0 seconds. The magnitude of the car’s average acceleration in this 4.0-second interval is

(1) 0.40 m/s2
(2) 2.5 m/s2
(3) 10 m/s2
(4) 13 m/s2

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3 A roller coaster, traveling with an initial speed of 15 meters per second, decelerates uniformly at –7.0 meters per second2 to a full stop. Approximately how far does the roller coaster travel during its deceleration?

(1) 1.0 m
(2) 2.0 m
(3) 16 m
(4) 32 m

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4 The diagram below represents a 0.40-kilogram stone attached to a string. The stone is moving at a constant speed of 4.0 meters per second in a horizontal circle having a radius of 0.80 meter. 

The magnitude of the centripetal acceleration of the stone is

(1) 0.0 m/s2
(2) 2.0 m/s2
(3) 5.0 m/s2
(4) 20. m/s2

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5 In the diagram below, a box is at rest on an inclined plane. 

Which vector best represents the direction of the normal force acting on the box?

(1) A
(2) B
(3) C
(4) D

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Note that question 6 has only three choices.

6 If the magnitude of the gravitational force of Earth on the Moon is F, the magnitude of the gravitational force of the Moon on Earth is

(1) smaller than F
(2) larger than F
(3) equal to F

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7 Which term represents a scalar quantity?

(1) distance
(2) displacement
(3) force
(4) weight

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8 A block weighing 15 newtons is pulled to the top of an incline that is 0.20 meter above the ground, as shown below. 

If 4.0 joules of work are needed to pull the block the full length of the incline, how much work is done against friction?

(1) 1.0 J
(2) 0.0 J
(3) 3.0 J
(4) 7.0 J

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9 A 1.0-kilogram rubber ball traveling east at 4.0 meters per second hits a wall and bounces back toward the west at 2.0 meters per second. Compared to the kinetic energy of the ball before it hits the wall, the kinetic energy of the ball after it bounces off the wall is 

(1) one-fourth as great
(2) one-half as great
(3) the same
(4) four times as great

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Note that questions 10 and 11 have only three choices.

10 As a spring is stretched, its elastic potential energy

(1) decreases
(2) increases
(3) remains the same

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11 An electroscope is a device with a metal knob, a metal stem, and freely hanging metal leaves used to detect charges. The diagram below shows a positively charged leaf electroscope. 

As a positively charged glass rod is brought near the knob of the electroscope, the separation of the electroscope leaves will

(1) decrease
(2) increase
(3) remain the same

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12 A catapult with a spring constant of 1.0 104 newtons per meter is required to launch an airplane from the deck of an aircraft carrier. The plane is released when it has been displaced 0.50 meter from its equilibrium position by the catapult. The energy acquired by the airplane from the catapult during takeoff is approximately

(1) 1.3 103 J
(2) 2.0 104 J
(3) 2.5 103 J
(4) 1.0 104 J

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13 A 10.-ohm resistor and a 20.-ohm resistor are connected in series to a voltage source. When the current through the 10.-ohm resistor is 2.0 amperes, what is the current through the 20.-ohm resistor?

(1) 1.0 A
(2) 2.0 A
(3) 0.50 A
(4) 4.0 A

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14 In the circuit diagram below, what are the correct readings of voltmeters V1 and V2?

(1) V1 reads 2.0 V and V2 reads 4.0 V
(2) V1 reads 4.0 V and V2 reads 2.0 V
(3) V1 reads 3.0 V and V2 reads 3.0 V
(4) V1 reads 6.0 V and V2 reads 6.0 V

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15 A physics student notices that 4.0 waves arrive at the beach every 20. seconds. The frequency of these waves is

(1) 0.20 Hz
(2) 5.0 Hz
(3) 16 Hz
(4) 80. Hz

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16 An electric guitar is generating a sound of constant frequency. An increase in which sound wave characteristic would result in an increase in loudness?

(1) speed
(2) period
(3) wavelength
(4) amplitude

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17 The diagram below shows two points, A and B, on a wave train. How many wavelengths separate point A and point B?

(1) 1.0
(2) 1.5
(3) 3.0
(4) 0.75

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18 In a demonstration, a vibrating tuning fork causes a nearby second tuning fork to begin to vibrate with the same frequency. Which wave phenomenon is illustrated by this demonstration?

(1) the Doppler effect
(2) nodes
(3) resonance
(4) interference

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19 The diagram below shows wave fronts spreading into the region behind a barrier. Which wave phenomenon is represented in the diagram?

(1) reflection
(2) refraction
(3) diffraction
(4) standing waves

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20 The diagram below represents the wave pattern produced by two sources located at points A and B. Which phenomenon occurs at the intersections of the circular wave fronts?

(1) diffraction
(2) interference
(3) refraction
(4) reflection





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