waves basics+features

wave:an oscillation that transfers energy without transferring any matter

transverse waves:

in transverse waves the oscillations are perpendicular to the direction of energy transfer of the wave

eg light ripples on water 

longitudinal waves:

in longitudinal waves the oscillations are parallel to the direction of energy transfer of the wave

eg sound springs when you push the end

when waves travel through a medium the particles of the medium oscillate and transfer energy between each other but overall the particles stay in the same place

only energy transferred

features of waves:

the amplitude of a wave is the maximum displacement of a point on the wave from its undisturbed position

the wavelength is the distance between the same point on two adjacent waves

frequency is the number of complete waves passing a certain point per second

frequency is measured in hertz Hz

1 hertz is 1 wave per second

the period of a wave is the amount of time between one crest passing a point and the next crest passing the same point

period=1/frequency

wave speed:

v=f x wavelength(Lambda)

the wave speed is the speed at which energy is being transferred

measuring the speed of sound in air:

method:

using a a signal generator and speaker put 2 microphones next to the speaker

the detected wave at each microphone are…