Everything Science Grade 11

CHAPTER 16. THE PHYSICS OF MUSIC 16.3

SOLUTION

We can calculate the length of the flute from λ =^2 nLbut

Step 1 : We need to calculate the wavelength first:

f =

v

λ

262 =

345

λ

λ =

345

262

= 1,32 m

Step 2 : Using the wavelength,we can now solve for L:

λ =

2 L

n

=

2 L

1

L =

1 , 32

2

= 0,66 m

Now let’s look at a pipethat is open on one endand closed on the other. This pipe has a node at one
end and an antinode atthe other. An example of a musical instrument that has a node at one endand
an antinode at the otheris a clarinet. In the activity you will find out howthe wavelengths are
affected.