Answer:
<u>Here are some of the songs of Beethoven's</u>:–
- Septet.
- Moonlight Sonata.
- Pathetique Sonata.
- Adelaide (Most popular).
- Eroica Symphony.
- Fifth Symphony.
- Fidelio.
- Emperor piano concerto.
Answer:
a) 107.1875 Hz
b) 214.375 Hz
c) 321.5625 Hz
Explanation:
L = length of the open organ pipe = 1.6 m
v = speed of sound = 343 m/s
f = fundamental frequency
fundamental frequency is given as

inserting the values


Hz
b)
first overtone is given as
f' = 2f
f' = 2 (107.1875)
f' = 214.375 Hz
c)
first overtone is given as
f'' = 3f
f'' = 3 (107.1875)
f'' = 321.5625 Hz
Elliptical and Spiral have some similarities, they both are huge and contain lost of dust and also they are held by gravitational forces.