Efficiency is the measure of how efficient a process is. It is used to assess the ability of a process in avoiding waste energy, materials, money and time in doing a desirable output. It is calculated as;
Efficiency = useful energy ouput / total energy input
Efficiency = 15(9.81)(20) / 3450 = 0.85
Output= m*g*h = 15*9.8*20 = 2,940J
Input= 3450J (given)
Efficiency = output/input = 2,940/3450 = 0.85% efficient
Answer:
static electricity
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What is butter
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atoms remain bonded to each other in physical changes.
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c
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