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Veseljchak [2.6K]
3 years ago
11

Why are coal,nuclear,oil,and natural gas determined to be non-renewable types of energy resources ​

Physics
1 answer:
IrinaVladis [17]3 years ago
7 0

Answer:

Once used as a energy source they cannot be charged/used again.

Explanation:

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What will be the ME of a machine that produces a 240 N work with a 300
Elden [556K]

Answer:

Efficiency = 80%

Explanation:

Given the following data;

Work output = 240 N

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To find the mechanical efficiency of a machine;

Efficiency = \frac {Out-put \; work}{In-put \; work} * 100

Substituting into the equation, we have;

Efficiency = \frac {240}{300} * 100

Efficiency = 0.8 * 100

Efficiency = 80%

Therefore, the mechanical efficiency of the machine is 80 percent.

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Of course steady state condition occurs in almost any system but time it will occurs varies among system. for this kind of system, conduction, steady state conduction occurs when the temperature change from one point to the point is already constant. steady state is not achieved immediately because the heat travels and material will not be heated at the same way at the starting point.
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Ruthford's theory was identified by
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