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3 years ago

The ratio of output work to input work expressed as a percent is the blank of a machine.

2 answers:

Citrus2011 [14]3 years ago

8 0

The ratio of output work to input work expressed as a percent is the efficiency of a machine. It <span> is a measurable concept that can be determined by determining the ratio of useful output to total input. Hope this answers the question.</span>

DochEvi [55]3 years ago

4 0

Answer:

EFFICIENCY

Explanation:

Efficiency of a machine is commonly defined as the ratio of output work (work done by the machine) to work done on the machine (input work) expressed as percent.

The efficiency of a machine offers insight on the level of energy preserved or giving out (lost) in a process.

If we examine a machine subjected to the level of work acted on it. Then the work acted on machine should be W.

The machine does its work as a result of the effort used on it to give the expected outcome. Then, the output formed by the machine should be W' .

Therefore,

The efficiency of the machine is evaluated as -

Efficiency

= work output (W)

--------------------------- × 100

work input (W)

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The correct answer is: Vacuoles in plants are much larger than those in animals.

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The cell membrane of animals is not thicker than those in plants. In addition, plant cells have a thick cell wall surrounding the cell membrane that is made of cellulose and provides great protection against osmotic and mechanical stress.

Vacuoles in plants ARE much larger than vacuoles in animals, because plant cells r<u>equire much more water</u> and other substances to function properly. Animals, on the other hand, can ingest water and nutrients through food.

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The statement that belongs in Kiko's report is Vacuoles in plants are much larger than those in animals.

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