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Lecture 2

# PHYS 1041 Lecture Notes - Lecture 2: Transverse Wave, International System Of Units, Longitudinal Wave

4 pages74 viewsWinter 2014

School

Mount Allison UniversityDepartment

PhysicsCourse Code

PHYS 1041Professor

Dr.David FlemingLecture

2This

**preview**shows page 1. to view the full**4 pages of the document.**Physics 1041 Notes

January 13th

Waves

•wave: traveling disturbance that transmits energy through a medium

•longitudinal wave: oscillations move in the same direction as the wave

propagation itself

•transverse wave: oscillations move at a 90 degree angle to the wave propagation

•standing wave: a driving process creating a wave pattern that appears to stay in

place

Important variables for waves

•A = amplitude, the maximum value of wave disturbance away from the

equilibrium position (SI units of meters)

•λ (lamda) = wavelength, distance over which a pattern repeats itself, i.e. from

max point to max point (SI units of meters)

•T = period, time of one complete oscillation or wave pattern (SI units of seconds)

•f = frequency, number of wave cycles that pass per unit time (SI units of Hertz)

•v = velocity, speed of travel through a medium (SI units of meters per second)

•F = force (SI units of newtons)

•m = mass (SI units of kilograms)

•g = acceleration due to gravity, equal to approximately 9.81m/s2

•L = length of object, i.e. string (SI units of meters)

Important equations for waves:

T

f1

=

λ

fv

=

mgF

=

Lm

F

v/

=

Other important equations:

Percent error =

%100

×

−

B

BA

where A=measured value and B=theoretical value

Percent difference =

%100

)(

2

1

×

+

−

BA

BA

where A and B are two measured values

January 15th

Parameters of waves

λ= wavelength

v= speed of wave

f=frequency

all related by the equation

λ

fv

=

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