Answer:
1) Wave 1 = 1.8/3.24 = 0.555 ms^-1
Wave 2 = 1.8/3.22 = 0.559
Wave 3 = 1.8/3.25 = 0.554
Average = 0.554+0.555+0.559/3 = 0.556
2) Frequency = v/wavelenght
calcualte v using unitary method number of waves
over 10 seconds time
Frequncy 1 = 1.11Hz
Freq 2 = 1.43Hz
Freq 3 = 2.16 Hz
I might be wrong for the frequencies
3) They are same they do match
4)Inverse proportionality
5) freq = velocity of wave / wavelength of wave
6) different as different K spring constants which would alter the time
for an oscillation of wave giving different measurements and speed of a wave
7) Uncertainties might be the reaction time the time recorded might be delayed by 1 second, Uncertainties will be significant though due to smaller calculations.