What three elements listed on the periodic table exhibit magnetic properties?
1 answer:
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Answer:
<h2>96 Joules</h2>Explanation:
We know that efficiency is the ratio of output power by input power. i.e. Efficiency describes the quality of machine or system how good it is.
Solution,
Energy input of system = 120 J
Efficiency = 80% =
Now,
According to definition,
Efficiency =
Cross multiplication:
Calculate the product
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