An airplane has a speed of 120 m/s in an angle flight of 30° above the horizontal. What is the upward components of the airplanes velocity?

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?

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

How many neutrons does plutonium -196 with an atomic number of 78.