Why is a bird able to sit on a power line? a. because the line is covered with insulating material. c. the voltage in power lines is very small. b. because both feet are on the same line there is no difference in voltage from foot to foot. d. birds are not good conductors of electricity

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?