Question

question #14 which of the following wave properties is changed by the doppler effect? frequency energy speed amplitude question #15 all light waves are compressional longitudinal electromagnetic mechanical

Explanation:

For Question #14, the Doppler Effect is the change in frequency of a wave in relation to an observer who is moving relative to the wave - source. For Question #15, light waves are a part of the electromagnetic spectrum and are electromagnetic waves.

Answer:

Question #14: Frequency
Question #15: Electromagnetic