Physics- Ch. 3 Flashcards
Period of a wave?
The TIME it takes a wave to vibrate a single cycle, or the time from the start of one cycle to the start of the next cycle.
Units of a period
Units of time
Microseconds
Seconds
Hours
Days
Typical values of Period?
0.06 to 0.5 microseconds
Period can be determined by
& can it be adjusted by sonographer?
Sound source ONLY
NOT by the medium
the sonographer cannot change the period
Frequency of a wave?
of particular events that occur in a specific duration of time.
of cycles that occurs in one second.
Units for frequency
Per second
1/ second
Hertz or Hz
Typical values of Frequency?
2 MHz to 15 MHz
Frequency is determined by?
Can it be adjusted by sonographer?
SOUND SOURCE ONLY
NOT by medium
NO it can’t be adjusted.
What is the relationship between frequency and period?
Inversely related
As frequency increases, period decreases.
As frequency decreases, period increases.
What other special relationship does period and frequency have?
They are reciprocals.
Period x Frequency = 1
A wave with the lowest frequency has the…..
Longest period
A wave with the shortest period has the…..
Highest frequency
