Problems 1
Amp and wavelength
Problems 2
Sound
Formulas
100
You shout at a wall cave 10m away and sound is traveling at 340m/s and there is an echo. How far does the sound travel?
20m
100
What is the amplitude of the wave?
Amplitude = 9
100
You see 4 waves in 8s. What is the waves frequency?
0.5Hz
100
What type of Wave is sound?
Longitudinal
100
What is the formula for frequency?
# waves/time or 1/T
200
You shout at a wall cave 10m away and sound is traveling at 340m/s and there is an echo. How long did it take to hear your echo?
17s
200
What is the wavelength of the wave?
Wavelength = 12
200
A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
500 m/s
200
What part the wave do you change if you want to change the pitch?
frequency
200
Formula for distance if you know the speed
d=v/t
300
What did you get for 3?
1.75 waves
300
What is the wavelength?
WL = 3
300
How fast does a wave travel in -15 deg Cel.?
322m/s
300
A sound wave produced with an amplifier (louder) will have a _________ amplitude.
Higher
300
Formula for speed if you know the temperature.
v=331+(.6T)
400
What did you get for number 6b?
21.05Hz
400
What is the amplitude of the wave?
Amplitude = 5
400
A wave is traveling at 350m/s, what is the temperature outside?
31.67 deg cel
400
Sound waves more through a _________.
Medium
400
Wavelength formula(s)
v/f or L/#waves
500
What did you get for number 2b
357.3Hz
500
What is the amplitude of the wave?
Amplitude = 9
500
Wave 1 has a frequency of 386Hz and there is a beat frequency 67Hz, what is wave 2's frequency?
453Hz or 319Hz
500
If you want to increase the volume of a tuning fork, why do you hit it harder on your shoe?
Hitting the tuning fork harder on your shoe increases the amplitude which increases the volume
500
Formula for beat frequency formula(s)
|f1-f2| or #beats/time