Answer:
Water has more kinetic energy because it is liquid, as ice is harder, so it's cells can't move as much.
Yes because we have day and night and seasons
I believe destructive interference.
EXPLANATION: when two waves meet and a crest of one wave is parallel to the crest of another destructive interference occurs. You subtract the amplitude of the two waves that meet and you’ll get the amplitude of the wave they’ll form. If it is the same amplitude the result will be zero.
Hope this helps
frequency of engine is given here




now we have angular speed as


similarly


now by the formula of angular acceleration we will have




D. a pot of boiling water!