An astronaut travels to a star system 4.3 ly away at a speed of 0.90 c . Assume that the time needed to accelerate and decelerate is negligible. A. How long does the journey take according to Mission Control on earth?
B. How long does the journey take according to the astronaut?
C. How much time elapses between the launch and the arrival of the first radio message from the astronaut saying that she has arrived?

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

see earlier answer

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.