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Psychology (925)
PSYCH 3A03 (11)
Paul Faure (11)

Problem_Set_2.pdf

3 Pages
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School
McMaster University
Department
Psychology
Course
PSYCH 3A03
Professor
Paul Faure
Semester
Fall

Description
Psych 3A03 22 September 2013 McMaster University Paul A. Faure Instructions and Tips • The speed of sound in air (c ) iair 340 m⋅s ; the speed of sound in water (c water is = 4⋅cair • Remember that log (2) 100.3. • A calculator is not necessary to answer any of these questions. 1. Write the equation for a line with a slope of 1, 3 and 5, each having a y-intercept equal to its slope. (a) Line 1: (b) Line 2: (c) Line 2: 2. Draw the unit circle andlabelpointsatevery π/4 radians starting from x=1, y=0. What angle (θ) in degrees corresponds to each π/4 radian point starting from x=1, y=0? 3. (a) Write the equation that describes the instantaneous pressure, P(t) , of a sine wave with a peak amplitude of 4 Pascals (Pa), a period (T) of 1 ms, and a starting phase angle (θ) of 3.14 radians (rad). (b) Write the equation for the instantaneous pressure of the above sound if the frequency (f) is doubled and the starting phase angle (θ) is shifted by -90°. (c) Write the equation that describes the instantaneous pressure, P(t) , of a sine wave with a peak amplitude of 0.01 Pa, a frequency (f) of 5000 Hz, and a starting phase angle (θ) of 270°. Problem Set #2 page 1 of 3 Psych 3A03 22 September 2013 McMaster University Paul A. Faure 4. What is the period (T)
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