(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 9.00 cm2?
b) Find the maximum charge if polystyrene is used between the plates instead of air.
For a TeflonTM-filled parallel-plate capacitor having a plate area of 175 cm2 and insulation thickness of 0.0500 mm, determine the following:
(c) the capacitance
(d) the maximum voltage that can be applied to this capacitor in V

Iwould say a is accurate

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