PhysicsLAB NY Regents Exams
January 2004, Part 3

Constants        Formulas

Base your answers to questions 41 through 43 on the information and diagram below.

A system consists of an oscillator and a speaker that emits a 1,000.-hertz sound wave. A microphone detects the sound wave 1. 00 meter from the speaker.

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41. Which type of wave is emitted by the speaker?

(1) transverse
(2) longitudinal
(3) circular
(4) electromagnetic

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42 The microphone is moved to a new fixed location 0.50 meter in front of the speaker. Compared to the sound waves detected at the 1.00-meter position, the sound waves detected at the 0.50-meter position have a different

(1) wave speed
(2) frequency
(3) wavelength
(4) amplitude

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Note that question 43 has only three choices.

43 The microphone is moved at constant speed from the 0.50-meter position back to its original position 1.00 meter from the speaker. Compared to the 1,000.-hertz frequency emitted by the speaker, the frequency detected by the moving microphone is

(1) lower
(2) higher
(3) the same

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Note that question 44 has only three choices.

44 The diagram below represents a lamp, a 10-volt battery, and a length of nichrome wire connected in series.

As the temperature of the nichrome is decreased, the brightness of the lamp will

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

Base your answers to questions 45 and 46 on the circuit diagram below.

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45 If switch S1 is open, the reading of ammeter A is

(1) 0.50 A
(2) 2.0 A
(3) 1.5 A
(4) 6. 0 A

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46 If switch S1 is closed, the equivalent resistance of the circuit is

(1) 8.0 Ω
(2) 2.0 Ω
(3) 3.0 Ω
(4) 16 Ω

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47. An electron in a mercury atom drops from energy level i to the ground state by emitting a single photon. This photon has an energy of

(1) 1.56 eV
(2) 8.82 eV
(3) 10.38 eV
(4) 11. 94 eV

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48. Excited hydrogen atoms are all in the n = 3 state. How many different photon energies could possibly be emitted as these atoms return to the ground state?

(1) 1
(2) 2
(3) 3
(4) 4

Base your answers to questions 49 through 51 on the information and diagram below. Three waves, A, B, and C, travel 12 meters in 2.0 seconds through the same medium as shown below.

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49 What is the amplitude of wave C?

(1) 1 m
(2) 2 m
(3) 3 m
(4) 6 m

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50 What is the period of wave A?

(1) 0.5 sec
(2) 2 sec
(3) 3 sec
(4) 6 sec

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51 What is the speed of wave B?

(1) 1 m/sec
(2) 3 m/sec
(3) 6 m/sec
(4) 12 m/sec

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A proton starts from rest and gains 8.35 10-14 joule of kinetic energy as it accelerates between points A and B in an electric field.

58. What is the final speed of the proton?

(1) 7.07 106 m/s
(2) 1.00 107 m/s
(3) 4.28 108 m/s
(4) 5.00 1013 m/s

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60. A long copper wire was connected to a voltage source. The voltage was varied and the current through the wire measured, while temperature was held constant. The collected data are represented by the graph below. Using the graph, determine the resistance of the copper wire.

(1) 0.04 Ω
(2) 16 Ω
(3) 20.8 Ω
(4) 25 Ω





Additional Tests
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New York State Library System.

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