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29
Physics
01/03/2012

Term
 5: What is the work - energy theorum?
Definition
 "The work done is equal to the change in kinetic energy."
Term
 5: What does work equal?
Definition
 Work = the change in kinetic energy
Term
 5: what do we learn from the new equation of work?
Definition
 that another equation could be force x distance = 1/2 mass x velocity (squared)
Term
 6: What is the interference pattern?
Definition
 when waves overlap
Term
 6: What is displacement?
Definition
 the wave's position relative to its rest position
Term
 6: What is a constructive interference?
Definition
 when the crest of one wave overlaps with the crest of another wave
Term
 6: What is produced as a result of constructive interference?
Definition
 a wave of greater amplitude
Term
 6: What is destructive interference?
Definition
 when the crest of one wave overlaps the trough of another wave
Term
 6: how are the effects of destructive interference eliminated?
Definition
 by cancelation
Term
Definition
 the recorded signal is continuously variable as well
Term
 7: What are microphones used for?
Definition
 to convert air pressure into an electrical signal that has a current or voltage directly proportional to the air pressure at each instant.
Term
 7: What does the changing current or voltage change?
Definition
 the magnetization of a tape of the displacement of a groove on a record cutter to record the sound
Term
Definition
 the physical properties of the sound are converted to a series of numbers
Term
 7: What is sound by nature?
Definition
 analog
Term
 7: How do you convert a signal from a microphone?
Definition
 it must be converted to a digital signal by an analog-to-digital converter. the signal is then recorded to a compact disc or hard drive
Term
 7: How does stereo recording work?
Definition
 2 or more microphones are used to produce 2 separate audio signals. 2 speakers are needed to reproduce the sound.
Term
 7: How does a mono recording work?
Definition
 only one microphone is used to produce one audio signal. only one speaker is needed to reproduce the sound.
Term
 7: What is mixing?
Definition
 a part of the recording process when all of the different instruments and voices are combined to produce a finalized signal.
Term
Definition
 the recorded signal is continuously variable as well
Term
 7: What are microphones used for?
Definition
 to convert air pressure into an electrical signal that has a current or voltage directly proportional to the air pressure at each instant.
Term
 7: What does the changing current or voltage change?
Definition
 the magnetization of a tape of the displacement of a groove on a record cutter to record the sound
Term
Definition
 the physical properties of the sound are converted to a series of numbers
Term
 7: What is sound by nature?
Definition
 analog
Term
 7: How do you convert a signal from a microphone?
Definition
 it must be converted to a digital signal by an analog-to-digital converter. the signal is then recorded to a compact disc or hard drive
Term
 7: How does stereo recording work?
Definition
 2 or more microphones are used to produce 2 separate audio signals. 2 speakers are needed to reproduce the sound.
Term
 7: How does a mono recording work?
Definition
 only one microphone is used to produce one audio signal. only one speaker is needed to reproduce the sound.
Term
 7: What is mixing?
Definition
 a part of the recording process when all of the different instruments and voices are combined to produce a finalized signal.
Term
 8: Does strength or weight increase more quickly?
Definition
 weight
Term
 8: Where does strength come from?
Definition
 the cross sectional area
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