(iii) an air bubble at the bottom of a lake 43.5 m deep has a volume of 1.00 cm. if the temperature at the bot- tom is 5.5°c and at the top 21.0°c, what is the volume of the bubble just before it reaches the surface? 45. (11) a cubic box of volume 3.9 × 10-2 m3 is file with air at atmospheric pressure at 20°c. the box closed and heated to 180°c. what is the net force on each side of the box?

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