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# Waves,Work and Power

What's the definition of Wave? Vibrations in a medium releasing energy.
What's the definition of Medium? solid,liquid or gas that can go through a wave.
What's the definition of Transverse Wave? Where particles move perpendicularly to the direction the wave travels.
What's the definition of Crest? The points where the wave is the highest.
What's the definition of Trough? The point where the wave is the lowest.
What's the definition of longitudinal wave? Where the particles move back and fourth in the same direction that the wave travels.
What's the definition of Compression? The Part of a wave that is close together.
What's the definition of Rarefaction? The part of a wave that is not close together.
What's the definition of Mechanical waves? Waves that require a medium.
What's the definition of Electromagnetic waves? Waves that don't require a medium.
What's the definition of Amplitude? A measure of how far particles in the medium move from their rest position.
What's the definition of Wavelength? The distance from any point on a wave to the net identical point on the same wave.
What's the definition of Frequency? The number of waves that pass a point in a given amount of time usually 1 sec.
What's the definition of Hertz (Hz)? The unit in which frequency is measured in.
What's the definition of Wave Speed? The speed that waves travel.
What's the definition of Force? A push or pull exerted on an object in order to change the motion of the object.
What's the definition of Work? The use of force to move an object some distance.
What's the definition of Power? Rate at which work was done.
How do you calculate power? work divided by time
How do you calculate work? Force times distance
How do you calculate wavelength and wave speed? distance divided by time and wavelength times frequency
The speed of the wave was 2.5 cm/s and the wave travel 50 cm, find the time it took that wave to travel that far? d=S x T 50cm=25cm/sec x T 50÷2.5=20 20=T 20 seconds
If the wavelength of a wave was 10mm and the speed 70mm/s find its frequency s=λ ⋅ f 70= 10 ⋅ f 70 ÷ 10=7=f 7 Hz
The frequency of a wave was 80 Hz and the wavelength was 5 cm,find its speed. s=λ ⋅ f s= 80 ⋅ 5 speed=400 400 secconds
If we measure the wavelength of a transverse wave from crest to crest or trough to trough , how would we measure the wave length of a longitudinal wave? Compression to Compression OR refaction to refaction
When a wave carries more energy there is a ___________ amplitude Higher
Created by: alise21