What is the relationship between frequency and degree of refraction? a)dispersive media waves of high frequency do not refract at all while waves of low frequency do
b)dispersive media waves of high frequency refract more than do waves of low frequency
c)dispersive media waves of low frequency refract more than do waves of high frequency
d)dispersive media waves of low frequency do not refract at all while waves of high frequency do

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?