Some gas is trapped in a large syringe by a piston. The atmospheric pressure is 100kpa. The pressure gauge indicates that the gas pressurr is 200kpa above atmospheric pressure. The piston moves outwards and the volume of the gas doubles. The temperature remains constant. What is the new gas pressure?

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?