Math Problem Statement

Analyze the wave function y(x, t) = 3 sin(4πx - 6πt + π) and its characteristics, including amplitude, wavelength, period, phase shift, and wave direction.

Solution

The provided image contains information about a wave function and its characteristics. Let's analyze it step by step.

Wave Function:

The function given is: y(x,t)=3sin(4πx6πt+π)y(x, t) = 3 \sin(4\pi x - 6\pi t + \pi) where:

  • xx represents the position in meters.
  • tt represents the time in seconds.
  • y(x,t)y(x, t) is the displacement of the wave in meters.

Key Components of the Wave:

  1. Amplitude:
    The amplitude is the coefficient in front of the sine function, which is 3 meters. This means the wave oscillates between y=3y = 3 and y=3y = -3.

  2. Angular Wave Number (kk):
    From the equation, the term 4π4\pi corresponds to kk, the angular wave number.
    k=4π    λ=2πk=2π4π=12metersk = 4\pi \implies \lambda = \frac{2\pi}{k} = \frac{2\pi}{4\pi} = \frac{1}{2} \, \text{meters} So, the wavelength λ\lambda is 0.50.5 meters.

  3. Angular Frequency (ω\omega):
    The term 6π6\pi corresponds to ω\omega, the angular frequency.
    ω=6π    T=2πω=2π6π=13seconds\omega = 6\pi \implies T = \frac{2\pi}{\omega} = \frac{2\pi}{6\pi} = \frac{1}{3} \, \text{seconds} The period TT is 1/31/3 seconds.

  4. Phase Shift:
    The term π\pi inside the sine function represents the phase shift. A phase shift of π\pi corresponds to a shift by half the wavelength.

  5. Wave Direction:
    Since the equation contains 4πx6πt4\pi x - 6\pi t, the wave moves in the positive xx-direction (because of the negative sign with ωt\omega t).


Summary:

  • Amplitude: 3 meters
  • Wavelength (λ\lambda): 0.5 meters
  • Period (T): 1/3 seconds
  • Direction: Positive xx-direction
  • Phase Shift: π\pi (half a wavelength)

Do you need further details or have any questions?
Here are five related questions to explore further:

  1. How do you determine the wave velocity from the given function?
  2. What is the difference between phase velocity and group velocity?
  3. How would the wave function change if the amplitude doubled?
  4. What happens to the wave if the phase shift changes from π\pi to π/2\pi/2?
  5. How would the graph look if the wave moved in the negative xx-direction?

Tip: The wave speed can be computed as v=λTv = \frac{\lambda}{T}, using the wavelength and period.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Wave Functions
Amplitude
Wavelength
Frequency
Phase Shift

Formulas

y(x, t) = A sin(kx - ωt + φ)
Wavelength λ = 2π / k
Period T = 2π / ω
Wave speed v = λ / T

Theorems

Wave Equation

Suitable Grade Level

Grade 11-12