What will happen to the absorption and/or emission spectral lines of an object moving away from earth at high speed?
a. they will be shifted toward the blue end of the spectrum.
b. they will be made more intense.
c. they will be shifted toward the red end of the spectrum.
d. they will be made less intense.
e. they will be unaffected. submit

Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?