14. THE DOPPLER EFFECT Enter data from the lab below : speed of sound , c, in air at 25 C is m/s frequency of source . f, hertz approaching the observer f\" hertz receding from observer fa hertz f _f vcl " 9 C v 3 or f fa : frequency of source f, = frequency of observer :2 speed ot sound v = velocity oi source (remember the velocity of a receding source is negative ) Answer the questions based on data from the lab . 1} Calculate the approaching velocity 01 the car. 5 = m/s 2) Calculate the receding velocity of the car. 3 2 m/s 3} Is the receding velocity the same as the approaching velocity ? 4} Convert the velocity of the car to miles; per hour. (1 mile lhour = 0.45 meters fsec} v.9 = mites {hour 5} As seen in the video . does this speed oi the car seem reasonable \".7 If not, you may want to check your calculations 6} If a star is moving away from the earth ,would its light appear to shift toward the red or the blue ? Why