The international space station is in a 250-mile-high orbit. What are the station’s orbitalperiod, in minutes, and speed? ( The mass of earth is 5.98x1024 kg and a radius of6.37x106m)

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

When solid surfaces slide over each other the kind of friction that occurs is called friction