20 g of ice is mixed with 80 g of water at 0°С. Find the final temperature of the nixture. (Take specific latent heat of ice as 336 Jg-1)
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The magnets are probably damaged or there not strong enough to attached to the refrigerator

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