A very long insulating cylindrical shell of radius 6.00 cm carries a charge of 8.50 μC/m (linear charge density) spreading uniformly over its outer surface. What would a voltmeter read if it is connected between (a) the surface of the cylinder and 4.00 cm away (outward) from the surface, and (b) the surface and a point 1.00 cm from the central axis of the cylinder?

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?