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lianna [129]
3 years ago
13

An engine takes in 2400 J of heat, and rejects 1880 J of heat into the air. What is the efficiency of the engine? (No Unit)

Physics
1 answer:
Galina-37 [17]3 years ago
8 0

Answer:

.2166 repeating or 21.66% repeating

Explanation:

In attached image

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Explain what differentiates the Earth’s crust and lithosphere.
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Answer:

What is the difference between the crust and lithosphere? The crust (whether continental or oceanic) is the thin layer of distinctive chemical composition overlying the ultramafic upper mantle. ... The lithosphere is the rigid outer layer of the Earth required by plate tectonic theory.

Explanation:

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2 years ago
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Using the criteria you described in your previous answer, how would you compare solar power to fossil fuel power?
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Solar power differ to fossil fuel power in that solar power is a much more optimal resource than fossil fuels

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<h3>What is renewable energy?</h3>

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2 years ago
What does a geneticist study?
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Answer:

Genetics is a branch of biology that studies the inheritance of physical and behavioural characteristics of living things, and how these traits are passed down through generations. Geneticists study genes and the science of heredity (inherited traits passed down through generations).

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3 years ago
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6. To which of these abrasive disks can you
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7 0
2 years ago
A
malfutka [58]

Answer:

<em>The penny will hit the ground at 6.39 seconds</em>

Explanation:

<u>Free Fall</u>

The penny is dropped from a height of y=200 m. The equation of the height on a free-fall motion is given by:

\displaystyle y=\frac{gt^2}{2}

Where g=9.8\ m/s^2, and t is the time.

Solving for t:

\displaystyle t=\sqrt{\frac{2y}{g}}

Using the value y=200:

\displaystyle t=\sqrt{\frac{2*200}{9.8}}

t=6.39 sec

The penny will hit the ground at 6.39 seconds

4 0
3 years ago
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