M
Meg
Guest
The residents of a small planet have bored a hole straight through its center as part of a communications system. The hole has been filled with a tube and the air has been pumped out of the tube to virtually eliminate friction. Messages are passed back and forth by dropping packets through the tube. The planet has a density of 4540 kg/m3, and it has a radius of R=5.73E+6 m. What is the speed of the message packet as it passes a point a distance of 0.280R from the center of the planet?
How long does it take for a message to pass from one side of the planet to the other?
How long does it take for a message to pass from one side of the planet to the other?