Question

which is one characteristic shared by electromagnetic and mechanical waves? both have a frequency and amplitude. both move due to particles bumping into each other. both are formed by charged particles. both occur as a result of a disturbance.

Explanation:

Electromagnetic and mechanical waves both have a frequency (number of wave - cycles per unit time) and amplitude (maximum displacement from the equilibrium position). Mechanical waves move due to particle - to - particle interaction, but electromagnetic waves do not need a medium and are not formed by charged particles bumping into each other. Electromagnetic waves are formed by accelerating charged particles, not just any charged particles. Both types of waves are indeed the result of a disturbance. However, the most fundamental and common characteristic among the options is that they both have a frequency and amplitude.

Answer:

Both have a frequency and amplitude.