Question

explain then difference betwwen the following.
microphone and loudspeaker
pitch and timber
radar and sonar
electromagnetic waves and mechanical waves

Answer 1

microphone converts sound to electrical signals
Loudspeaker converts electrical signals to sound

pitch is frequency of sound
timber is quality of sound

radar receives electromagnetic waves
sonar emits electromagnetic waves

electromagnetic waves consist electric and magnetic components they can travel in vaccum
mechanical waves cant travel in vaccum