Oscillation & periodic
motion
motion
The time it takes to complete one full cycle
Period
What is a simple Pendulum?
A mass suspended by a light string or rod.
A spring when pulled or compressed makes this type of wave
what is a longitudinal wave
power/area
intensity
This is the SI unit for the inverse of the period
Hertz
The time Required for one full oscillation.
The Period of a Pendulum.
this medium allows sound to travel at 1400 m/s at 0 C
what is water
why does the loudness of a sound decrease as you move away
The sound spreads out over a large area as it moves away from the source
At this point of simple harmonic motion, there is 0 restoring force and speed is at a maximum
Equilibrium
How does the Period of a pendulum change if the pendulum is lengthened?
The Period is longer.
This point of a wave shows the highest point of potential energy of a wave
what is a crest
doing what to the loudness of a sound increases the intensity by a factor of ten corresponding to an increase of 10 db
This type of wave describes simple harmonic motion
Sine wave
What is the external or vibrating system that causes another object to oscillate?
Resonance.
A wave with a speed of 2 m/s and a frequency of 20 Hz has this wavelength
what is .1 meters
as you move very quietly towards a speaker emitting a pure tone which characteristics of the wave gets larger
what is frequency and loudness
In the equation 2(pie) square root m/k, changing this constant by a factor of 4 will half the frequency and double the period
Mass
At what frequency should you drive a pendulum for it to be at resonance?
The pendulums Natural Frequency.
A wave moves by you with a speed of 5.6 m/s. The distance from the crest of this wave to the next trough is 2.4 m. what is the frequency of the wave.
what is 1.2 Hz
what area does a sound with a intensity of 0.0674 m^2 pass through if the power of the source is 0.21 W
what is 0.01407 W/m