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work, power, energy

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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What is power?   power is the rate at which work is done.   What is wavelength?   Wavelength is the distance from any point on a wave to the next identical point on the same wave.   What is frequency?   Frequency is the number of waves that pass a point in a given amount of time.  
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If 26W of power is produced in 15 seconds, how much work is done?   W=PxT W= 26x15 W=390J   What is a longitudinal wave?   A longitudinal wave is when energy is transferred from one object to another.   What is a compression?   A compression is the direction in which waves travel.  
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What is work?   Work is the use of force to move an object some distance.   What is a trough?   A trough is the points where the wave is lowest.   What is amplitude?   Amplitude is measured of how far particles in the medium move from their rest position.  
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If 78J are produced in 6 seconds, how much power is being done?   P=W divided by T P=78J divided by 6sec P=13   How many different types of waves are there?   4. longitudinal, transverse, mechanical, and electromagnetic waves.   What are the materials that a medium can travel in?   Solid, liquid, or gas.  
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Can wavelength be measured from one crest to a trough?   No, wavelength is measured from one crest to another crest or one trough to another trough.   What are Hertz?   1 hertz is equal to one wavelength per second.   What is the wavelength if each crest is 12ft long and troughs are 14ft long?   Wavelength= 12=14=12 wavelength= 38ft long.  
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What is a crest?   A crest is the point where the wave is highest.   What is wave speed?   Wave speed is the speed that waves travel.   What is a transverse wave?   A transverse wave is when springs coils move up and down as the wave passes.  
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What are mechanical waves?   Mechanical waves are waves that require a medium.   What is a wave?   A wave is a disturbance that travels through a medium.   What is force?   Force is a push or pull exerted on an object on order to change the motion of the object.  
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If one hertz = one wavelength per second then how much wavelength is in seven hertz?   Wavelength= 7 per second also.   P=40 watts W= 2,000 Joules T?   T= W divided by P T=2,000 divided by 40 T=50 seconds   P=226 watts T=23 seconds W=?   W=PxT W=226x23 W=5,198J  
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What is a medium?   A medium is the material through which a wave can travel.   What is rarefaction?   Rarefaction is the direction in which an object is disturbed.   What are electromagnetic waves?   Electromagnetic waves are traveling of 1 energy source to another.  
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