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ss7ja [257]
4 years ago
9

If the _____ work on a simple machine equals the output work, the machine is said to be 100% efficient.

Physics
1 answer:
omeli [17]4 years ago
3 0
<h3>Answer:</h3>

Input work

<h3>Explanation:</h3>

Concept being tested: Efficiency of machines

Therefore we need to know what is the efficiency of a machine

  • Efficiency of a machine is the ratio of work output of machine to the work input expressed as a percentage.
  • Thus;

Efficiency = (Work output ÷ Work input) × 100%

  • Therefore, if the work input is equal to the work output then the efficiency of the machine will be 100%.
  • Most machines are not 100% efficient due to loss of energy in form of heat due to friction of the moving parts of the machine.
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Answer:

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4 0
4 years ago
An ice skater accelerates backwards for 5.0 seconds to a final speed of 12 m/s. If the acceleration backwards was at a rate of 1
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Answer:

Vo = 4.5 [m/s]

Explanation:

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v_{f}=v_{o}+a*t

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3 years ago
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