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3 cards from this section. Quick, good the night before a test.
What is a mechanical wave?
Think about how waves in water move.
What is amplitude?
It relates to how tall the wave is.
What defines a mechanical wave?
Consider examples like sound waves.
True or False: Sound travels faster in gas than in liquid.
Think about the spacing of particles in different states.
If you know the speed of sound in air at 20°C is 343 m/s, calculate the expected speed at 0°C using the formula v = 331 + 0.6 × T.
What is the formula we discussed?
A stationary observer notes the frequency of a siren from an approaching ambulance to be 600 Hz. If the ambulance moves towards the observer at a speed of 30 m/s, what is the perceived frequency?
Think of the speed of sound and how motion alters frequency perception.
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