if you have 78g of lead at 78 degrees how much energy does it take to first raise the temperature to 2000oC and then lower it to 800oc

Fitness is the ability to perform only very light levels of physical activity.

True aroms consist made of nuclesus that surrousded by 0n protons neurologist me asap what or else and

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