Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Sound requires a medium to propagate (example: air, water, solid) hence the energy produced in a speaker produces movement in the mass of the medium and therefore produces sound.Light having dual nature does not require a medium to travel in (it travels even in space which is a vacuum and no medium is present there) so it does not produce a sonic boom.
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts