The amount of kinetic energu has depens upon an object's speed and its mass.
So its I and IV.
The correct answer is B.
Hope it helps!
#MissionExam001
The specific heat is the amount of heat per unit mass required to raise the temperature to 1 degree Celsius. (This is from google)
<span>the formation of a gas
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First, you need to count copper mass in alloy.
Second, you have to make an equation an find x ( the copper mass must be added). The answer is: 13,5g pure copper