SI unit
Equations
Waves
Sound
100
What is the Si unit for Amplitude
m
100
What is the equation for Hooke's law
Felastic = -kx
100
What is the word for "the time it takes a complete cycle to occur"
Period
100
What is an infrasonic wave
one under 20 Hz
200
What is the SI unit for periods
s
200
What is the equation for spring potential energy?
PEs = ½ kx2
200
What is amplitude
The maximum displacement from the equilibrium
200
what is the natural frequency
the frequency at which an object will vibrate when set in motion
300
What is the SI unit for frequency
Hertz (Hz), cycles/sec, s-1
300
What is the equation for frequency
f = 1/T
300
What is a rarefaction
region of a longitudinal wave in which the density and pressure are at a minimum
300
If two instruments are tuning and there is 7 beats percent heard what is the hertz different
7 Hz
400
What is the SI unit for sound intensity
W/m2
400
What is the equation for sound intensity
I = P/(4𝜋r2)
400
What wave doesn't need a medium
light
400
What is the Mach number
multiple of speed of sound for a moving object
500
What is the SI unit for Spring potential energy
J
500
what is the equation for period of a simple pendulum
500
what happens to the frequency of a wave if the wave length doubles
it is 2 times more
500
If a sound increased by 20dB how much louder would it be
4 times louder