Jerimiah is studying wave a and wave b. wave a is traveling at 3 hertz, and wave b is traveling at 1.2 hertz. what can be predicted about the waves if they were to crash into each other?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

What is a good example of instantaneous speed

The ozone hole appears in antarctica during