FORMULA
1. What is the wavelength of a 68 Hz sound wave
traveling at 340 meters per second?
Solution
Data : f = 68 Hz
V = 340 m/s
Question : λ = ….?
Answer :
λ = v/f = 340 m/s : 68 Hz = 5 m
2. What is the wavelength of a 100 Hz sound wave
traveling at 330 meters per second?
Solution
Data : f = 100 Hz
V = 330 m/s
Question : λ = ….?
Answer :
λ = v/f = 330 m/s : 100 Hz = 3.3 m
3. What is the wavelength of a 150 Hz sound wave
travelling at 340 meters per second?
Solution
Data : f = 15000 Hz
V = 340 m/s
Question : λ = ….?
Answer :
λ = v/f = 340 m/s : 150Hz = 2.27 m
4. Calculate the speed of sound in water with a frequency
of 500 Hz and a wavelength of 1.5 meters.
Solution
Data : f = 500 Hz
λ = 1.5 m
Question : v = ….?
Answer :
V = λf = 1.5 m x 500 Hz = 750 m/s
5. Calculate the speed of sound in liquid with a
frequency of 400 Hz and a wavelength of 3.6 meters.
Solution
Data : f = 400 Hz
λ = 3.6 m
Question : v = ….?
Answer :
V = λf = 3.6 m x 400 Hz = 1440 m/s
6. Calculate the wavelength of ultrasound wave with a
frequency of 400 Hz travelling at a speed of 1440 m/s in fatty tissue.
Solution
Data : f = 400 Hz
v= 1440 m/s
Question : λ= ….?
Answer :
λ
= v/f =1440 m/s : 400 Hz = 3.6 m
7. Calculate the frequency of sound with a wavelength of 10
m traveling at a speed of 330 m/s.
Solution
Data :
v=330 m/s
λ = 10 m
Question : f = ….?
Answer :
f = v/ λ = 330 m/s : 10 m = 33 Hz
8. The sound of lightning is heard by Pio 5 seconds after the lightning. If the speed of sound in air is 340 m/s, calculate the distance between the lightning and Pio.
Solution
Data : v = 340 m/s
t= 5 s
Question : d = ….?
Answer :
d = vxt = 340 m/s x 5 s = 1700 m
9. The sound of lightning is heard by Pedro 2.5 seconds after the lightning. If the speed of sound in air is 340 m/s, calculate the distance between the lightning and Pedro.
Solution
t= 2.5 s
Question : d = ….?
Answer :
d = vt = 340 m/s x 2.5 s = 850 m
10. A bomb explodes loudly. It heard by Pauline 10 s after exploding. If the speed of sound in air is 340 m/s, Calculate the distance between bomb and Pauline
Solution
Data : v = 340 m/s
t= 10 s
Question : d = ….?
Answer :
d= vt = 340 m/s x 10 s = 3400 m
