which statement is true about electromagnetic and mechanical waves?
a. Electromagnetic waves travel slower than mechanical waves
b. Electromagnetic waves transverse but mechanical waves are longitudinal
c. Electromagnetic waves all have the same frequency but mechanical waves occur with different frequencies and wavelengths
d. Electromagnetic waves can travel without a medium but mechanical waves require a medium to travel
The correct statement is:
d. Electromagnetic waves can travel without a medium but mechanical waves require a medium to travel.