In homework 2, you were asked to draw a pure vibrational spectra for a diatomic molecule. why do you not ever expect to observe a pure vibrational spectrum? given the selection rules for vibrational excitations by infrared electromagnetic radiation (light) and considering rotational excitations, draw the expected absorption rotational-vibrational (ro-vibrational) spectrum for a heteronuclear diatomic molecule transitioning from the v = 0 to v = 1 energy level. on your drawing, show explicitly the rotational transitions: ∆ = 1, 2, 3, 4 and ∆ = −1, − 2, −3, −4. b) what does the ro-vibrational absorption spectrum look like for a homonuclear diatomic molecule?

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Is this a question of an answer