Why is it important to scientists for a hypothesis to be testable? How would the experiment differ if it were not? What is an example of each type? Write 3-5 sentences.

Aballet student who learns with the of his instructor is demonstrating learning.

An object has a weight of 500 on earth what is the mass of this object

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?