Waves

Represented by the letter a and e

It is the maximum displacement where graph cannot go higher or lower

It's must be measured as length, so the SI unit is m (meter)

Represented by letter b

Must be measured on displacement distance graph,

This is because distance is x axis which measures length, so the SI unit is m (meter)

Is the length between two same phase cycle (amplitude to amplitude or similar)

Represented by letter c

Time taken for one wavelength to happen

Need to measure on displacement time graph, SI unit is s (seconds)

Is time taken for one wavelength takes place

Represented by letter c

Is the number of waves (wavelength) that happens in one second.

Need to be calculated using formula

f=1/T and the unit is Hz (Hertz)

Represented by letter y

Is the distance traveled by the waves over specific time

Need to be calculated using formula

v = f(λ) and SI unit is ms^-1

Represented by graph a

Happens when amplitude of wave becomes smaller and smaller

This is because of internal friction between molecules of external friction between objects

The friction causes heat energy which makes the wave loses energy

Represented by graph b

Happens when amplitude of wave becomes bigger and bigger

All objects have natural frequency which vibrates by itself.

If we add vibration of same frequency, the wave will increase in amplitude

Example is glass breaking when directed to singer voice

Incidence wave a (on solid surface)

Normal line f (90°) from surface at point of incidence

Incidence angle d, measured from normal line to incidence ray

Reflected angle e

Reflected wave b