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1) The motor is 75% efficient.
Explain what this means.

Please help !!
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Answer :

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Answer:

The more efficient the machine, the less energy wasted. For example, if a heat engine is able to turn 75 percent of the fuel it receives into motion, while 25 percent is lost as heat in the process, it would be 75 percent efficient

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Let's see

  • Efficiency is 75%

Means

  • The motor converts 75% of provided fuel into work rest released as heat or wasted

Take an example

Suppose you provided 100J of heat .

  • 75J is used as work
  • 25J wasted

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