For each of the following questions, briefly explain your answer. (20 points) a. if i prove an algorithm takes 2 ) worst-case time, is it possible that it takes o(n) on some inputs? b. if i prove an algorithm takes 2 ) worst-case time, is it possible that it takes o(n) on all inputs? c. if i prove an algorithm takes θ 2 ) worst-case time, is it possible that it takes o(n) on some inputs? d. if i prove an algorithm takes θ 2 ) worst-case time, is it possible that it takes o(n) on all inputs?

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall

Letter a, because when there are unlike charges they will always attract to each other.

Sublimation- which change of state is shown in model

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