What are the three longest wavelengths for standing soundwaves in a 122-cm-long tube under the following conditions.

a)the tube is open at both ends.
enter your answers in descendingorder separated by commas. (answer in m)
b)the tube is open at one end, closed at theother?
enter your answers in descendingorder separated by commas. (answer in m)

a)

2.44 m, 1.22 m, 0.81 m

b)

4.88 m, 1.63 m, 0.98 m

Explanation:

a)

= length of the long tube = 122 cm = 1.22 m

Wavelength for an open pipe is given as

for n = 1

for n = 2

for n = 3

b)

= length of the long tube = 122 cm = 1.22 m

Wavelength for a pipe open at one end is given as

for n = 1

for n = 2

for n = 3

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14