Waves
Longitudinal wave example:
A) Sound in air
B) Light in vacuum
C) Water surface ripples approx transverse
D) Radio em transverse
Wavelength symbol:
A) lambda
B) f
C) T
D) v only
Wave speed v equals:
A) f lambda
B) f/lambda
C) lambda/f wrong inverse
D) f lambda^2
Amplitude measures:
A) Maximum displacement
B) Speed
C) Frequency
D) Mass
Reflection angle equals:
A) Incident angle
B) Twice incident
C) Zero always
D) 90 always
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