2. what is the difference between an electromagnetic wave and a mechanical wave? a an electromagnetic wave…

Brief Explanations:

Mechanical waves, like sound waves, need a medium (solid, liquid, gas) to propagate as they rely on the vibration of particles in the medium. Electromagnetic waves, such as light, are composed of oscillating electric and magnetic fields and can travel through a vacuum because they don't depend on particle - to - particle interaction.

Answer:

B. A mechanical wave requires a medium to travel. An electromagnetic wave can travel through a vacuum.