A plastic rod is rubbed with a piece of wool, and a glass rod is rubbed with a piece of silk. An object is placed near the plastic rod, and an attractive force is detected. How will the object react when near the glass rod? A. A repulsive force will occur.
B. An attractive force will occur.
C. A neutralization will occur.
D. An electric discharge will occur.

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 

It is increased due to the doppler effect. (apex)

Diamonds or jewelry in the broader sense are other  veblen goods and so are high-end watches.