what the point in reporting a random question like if a person wants to make friends on here the question get repor ted i honestly think that's stu pid

Aphysical change is a change in the size, shape,, or stafe of matter true or false

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?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?