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 Output of a truck is 4500 J and its efficiency is 50%, the input energy provided to the truck is
  • a)
    5000 J
  • b)
    900 J
  • c)
    9000 J
  • d)
    500 J
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Output of a truck is 4500 J and its efficiency is 50%, the input energ...
► η = work output / heat input​
► η = 50% = 50/100 = 1/2
► 1/2 = 4500 / Heat input
► Heat input = 9000 J
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Community Answer
Output of a truck is 4500 J and its efficiency is 50%, the input energ...
It's like you buy an apple but the quality or rather the purity is 50% so you get to eat only half apple exactly here you in put 'x' amount of energy and get x/2 energy as output because the efficiency is only 50%
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