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UCLA / Physics / PHYSICS 1A / What is a disturbance that travels through some material or substance?

What is a disturbance that travels through some material or substance?

What is a disturbance that travels through some material or substance?

Description

School: University of California - Los Angeles
Department: Physics
Course: Physics for Scientists and Engineers: Mechanics
Professor: A;ldkjf ak;dfla
Term: Winter 2017
Tags: Physics
Cost: 50
Name: Physics 1B Midterm 1 Study Guide
Description: Chapter 15 and 16 study guide for midterm 1
Uploaded: 02/08/2017
2 Pages 261 Views 0 Unlocks
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Physics

Chapter 15

Mechanical wave

  • A disturbance that travels through some material of substance call medium
  • Transverse waves

  • The direction of the medium are perpendicular to the direction of travel of the wave
  • Longitudinal waves

  • The motions of the particles of the medium are back and forth along the same direction the wave travels ↔ ↔
  • Wave speed

  • The speed in which the disturbance propagates through the medium
  • *The medium itself does not travel through space, the overall pattern of the wave disturbance is what travels

    Periodic wave

  • Each particle in the wave undergoes periodic motion as the wave propagets
  • Periodic Transverse WavesDon't forget about the age old question of acc 270 exam 1

    *When a sinusoidal wave passes through a medium, every particle in the medium undergoes a simple harmonic motion with the same frequency

    Wavelength

  • The length of one complete pattern is the distance from one crest to the next, or frome one trough to the next, or from any corresponding point to another point on the next repetition.
  • Period

  • The time it takes from a wave to complete on full cycle.
  • Amplitude: A                        Wavelength: λ

    Angular frequency: W                Wave Speed: V

    Period: T                        Frequency: f

                            v =

                            v = Don't forget about the age old question of gvsu speech pathology

    Periodic Longitudinal Wave

    If you want to learn more check out What is responsible for the falling phase (2 points)?

    Wave function for a sinusoidal wave

    We also discuss several other topics like How to find the sum of 2 vectors?

    At x = 0

    Moving in t x direction:

  • w=vk                -  
  • Particle velocity: If you want to learn more check out asteroagnosia

    Particle acceleration: Don't forget about the age old question of spte 203 exam 2

    Wave equation:

    The physical quantities that determine the speed of transverse waves on a string are the tension and the mass / unit length of the string

    Speed of a transverse wave on a string.

    Power  

                       =         for mechanical wave, rate of energy transfer

                            quadruples f f is doubled (A=A)

                                                    But

    Pmax =

    Pav =

    Wave intensity

  • The time average rate at which energy is transported by the wave, per unit area
  •         (sphere)
  • Inverse- square law for intensity

    Principle of superstition:

    Standing wave on a string                                                         L=

    Node,points at which the

    String never moves                                                                        L=

    Antinodes: point at which                                                                L= 3/2

            A of string motion

            is greatest

    Standing wave on a string,

                                    

                    

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