- #1

selma

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Member warned about posting without the homework template

So I was given this diagram to a wave of a rope.

the following questions i have to answer...

**1) Find the wavelength in metres.**

2) If the time that the wave takes to move from point X to point Y is 6.0 s, determine the speed of the wave and its frequency

3)Find the speed and wavelength if the frequency of the source changed to 2.0 Hz and explain your reasoning.

I have answered these three mostly but I am doubtful about how correct they are, especially #1 and #3

·

4.8m / 3 waves = 1.6m per wave

Wavelength is 2/3 of the total distance of rope.

2/3 = 0.67

4.8m x 0.67

Λ= 3.2m

The wavelength is 3.2 m.

·

Δt= 6.0 s

Λ= 3.2m

v= Δd/Δt

v= 4.8m/6.0s

v= 0.8m/s

The speed of a wave in this equation is 0.8 metres per second.

f= v/Λ

f= 0.8 m per second/3.2m

f= 0.25 Hz

The frequency of the wave in this equation is 0.25 Hz.3) ·

2) If the time that the wave takes to move from point X to point Y is 6.0 s, determine the speed of the wave and its frequency

3)Find the speed and wavelength if the frequency of the source changed to 2.0 Hz and explain your reasoning.

I have answered these three mostly but I am doubtful about how correct they are, especially #1 and #3

·

**Find the wavelength in metres ******(this question I feel was confusing because I wasnt sure if the wavelength is actually 1.6 m or 3.2m)*4.8m / 3 waves = 1.6m per wave

Wavelength is 2/3 of the total distance of rope.

2/3 = 0.67

4.8m x 0.67

Λ= 3.2m

The wavelength is 3.2 m.

·

**If the time that the wave takes to move from point X to point Y is 6.0 s, determine the speed of the wave and its frequency**Δd= 4.8mΔt= 6.0 s

Λ= 3.2m

v= Δd/Δt

v= 4.8m/6.0s

v= 0.8m/s

The speed of a wave in this equation is 0.8 metres per second.

f= v/Λ

f= 0.8 m per second/3.2m

f= 0.25 Hz

The frequency of the wave in this equation is 0.25 Hz.3) ·

**Find the speed and wavelength if the frequency of the source changed to 2.0 Hz and explain your reasoning. ********(I came up with several answers but was not really convinced any of them were right)*