6. a satellite is orbiting earth just above its surface. the centripetal force making the satellite follow a circular trajectory is just its weight, so its centripetal acceleration is about 9.8 m/s2 (the acceleration due to gravity near earth’s surface). if earth’s radius is about 6375 km, how fast must the satellite be moving? how long will it take for the satellite to complete one trip around earth?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.