Airplane a is flying north with a constant horizontal velocity of 488 km/h. airplane b is flying southwest at the same altitude with a velocity of 567 km/h. from the frame of reference of a, determine the magnitude vr of the apparent or relative velocity of b. also find the magnitude of the apparent velocity vn with which b appears to be moving sideways or normal to its centerline. would the results be different if the two airplanes were flying at different but constant altitudes?

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.