Which of the following is an example of potential energy?
a. a bird positioned on the edge of a high cliff
b. a bike driving down the road
c. a dog eating dinner
d. a rock rolling on the ground through the air

i dont think you are wrong for wanting to get even with someone who did you wrong.

(i'm an eye for an eye kind of person) but if this person hurt you in a sexual way, i dont suggest doing anything to him. he should be taken to the proper authorities, you could go to jail depending on what you do. if it was something small like your sibling took your spot on the couch, than yea, i would get even with him by taking one of his favorite snacks lol. but i dont suggest you doing anything illegal.

c)as speed changes, wavelength and frequency change.

everything changes!