Energy Vocabulary
Waves Vocabulary
Wave Prperties
Work, Energy & Power
Wave Calculations
100
If you apply a force over a straight line distance (displacement), you are doing this
Work
100
The top of a transverse wave is called this
Crest
100
Police sirens whose pitch goes up when it heads towards you, and goes down when it moves away from you, is an example of this effect.
Doppler
100
A 1kg book is lifted up a distance of 1 meter. The change in gravitational potential energy is this value.
Change in Potential energy = mg∆h
= (1kg)(9.8m/s^2)(1m) = 9.8J
or
(1kg)(9.81m/s^2)(1m) = 9.81
Answer: 9.8J or 9.81J
100
2 waves with the same wavelength are traveling in the same medium. Maximum destructive interference occurs when the waves are out of phase by this degree number.
180°
200
When you lift up, you are increasing this energy
Gravitational Potential energy
200
The bottom of a transverse wave is called this
trough
200
Amplification of a wave as it's frequency is transfered from one meium to another.
Resonance
200
As roller coaster goes down a track with friction. What type of energy stays constant.
Total energy
200
What is the wavelength of the wave below.
2m
300
When you make an object go faster, on a frictioless surface, you are increasing this energy.
Kinetic
300
This type of wave makes particles vibrate perpendicular to the direction of it's motion.
Transverse wave
300
Points on a standing wave, created by destructive interference are called this.
Nodes
300
Total Energy of a system minus the Mechanical Energy of a system equals this type of energy
Internal Energy
300
The amplitude of the wave below.
0.5m
400
When you move an box at horizontally on the floor, with constant speed, you are increasing this energy.
Internal energy
400
This type of wave makes particles vibrate parallel to the direction of it's motion.
Longitudinal Wave.
400
Two wave crests intersect to form a bigger wave crest.What kind of interference is this?
Constructive Interference
400
The Power output of a 500N student who walks up a flight of stairs, 4m high in 10 second.
P = Fd/t = (500N)(4m)/10s = 200 Watts
400
What is the frequency of a wave with a period of 0.25s?
4 Hz
500
The rate at which work is done is called this.
Power
500
Number of wave cycles in a second is called this
Frequency
500
A wave curves around a barrier thanks to this wave phenomenon.
Diffraction
500
A 60kg student runs up a flight of stairs 4m high. The work done by the student is
Work - Change in Potential energy = mg∆h
= (60kg)(9.8m/s^2)(4m) = 2352J
or
(60kg)(9.81m/s^2)(4m) = 2354.4
500
What is the wavelength of a light wave taveling through space with a frequency of 7E14Hz?
Speed = frequency X wavelength
wavelength = speed/frequency
wavelength = (3E8m/s)/(7E14Hz) = 4.3E-7m