A power boat travels down the St. Lawrence River from Montreal to Quebec City at full throttle. The trip takes 3.0 h. The boat then heads back to Montreal, again at full throttle. This time the trip takes 15 h. With no gas left, the boat drifts with the current back to Quebec City. How long does the third trip take?

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.