The best thermal conductor is b. metal
I think it’s the last one
Hope this helps
Answer:
D. The frequency is not affected as the volume of sound increases
Explanation:
Volume of the sound is defined by the amplitude of the wave or how loud a sound is whereas Frequency is basically the pitch of the sound and is inversely proportional to the wavelength . Increasing frequency will increase the pitch of the sound without affecting it's volume.
its c electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere.
