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physics
study guide CH.25
Question | Answer |
---|---|
What is the symbol for frequency? | f |
a wiggle in time | vibration |
What determines the the Period of a pendulum? | the length |
The high points on a wave | crest |
the low points on a wave | trough |
what is the number of vibratioins in a given time (usually one secound)? | frequency |
what is the source of all waves? | something that vibrates |
What air the water air and string through which wave energy travels? | they are the medium |
when crest overlaps crest and causes an increase in amplitude what is it called? | constructivr interference |
when crest of one wave overlaps the trough of another and causes cancellation what is it called? | destructive interference |
True or false: you can only hear a sonic boom when it breaks the sound barrier. | False |
what is it called when a plane goes faster than the speed of sound? | supersonic |
what coccurs when a wave source moves faster than the waves it produces? | bow wave |
what happens when the source moves faster and faster in water? | the narrower the V-shape gets |
if a fire truck is moving towards you, with its horn on, what happens tto the frequency? | the frequency gets higher |