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Pie
3 years ago
9

What type of device is a coal-fired power plant?

Physics
1 answer:
Anuta_ua [19.1K]3 years ago
4 0

D. A heat engine that uses heat to do work

Explanation:

A coal fired power plant is a heat engine that uses heat to do work.

A heat engine is a device that is used to convert heat energy into mechanical energy .

A heat pump uses mechanical energy to produce more heat from a lower heat sink.

  • A coal power plant produces heat by firing the coal.
  • Heat from the coal combustion heats water to steam.
  • The steam is used to drive heavy turbines
  • The turbine has mechanical energy and it then produce electricity.

learn more:

Renewable resource brainly.com/question/4344417

#learnwithBrainly

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Based on the second law of thermodynamics, how would you expect a system to change over time?
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B. It's randomness would increase

Because the Second Law of Thermodynamics states that as energy is transferred or transformed, more and more of it is wasted. It also states that there is a natural tendency of any isolated system to degenerate into a more disordered state.

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3 years ago
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A jogger moves from a position x =
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Answer:

3 m/s

Explanation:

We'll begin by calculating the change in displacement of the jogger. This can be obtained as follow:

Initial displacement (d₁) = 4 m

Final displacement (d₂) = 16 m

Change in displacement (Δd) =?

Δd = d₂ – d₁

Δd = 16 – 4

Δd = 12 m

Finally, we shall determine the determine the average velocity. This can be obtained as follow:

Change in displacement (Δd) = 12 m

Time (t) = 4 s

Velocity (v) =?

v = Δd / t

v = 12 / 4

v = 3 m/s

Thus, the average velocity of the jogger is 3 m/s

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3 years ago
You start pushing a suitcase full of clothes in the horizontal direction with a force of 25.0 newtons. The weight of the suitcas
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Answer:

Distance traveled will be 5.6307 m

Explanation:

Time t = 3 sec

We have given force F = 25 N

We know that force is given by F = ma

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We know that weight is given by W = mg

So mg = 196 -----------------eqn 2

From equation 1 and equation 2 \frac{a}{g}=\frac{25}{196}

a=1.2512m/sec^2

Initial velocity is given as 0 so u = 0 m/sec

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Answer: A

Explanation:

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Answer;

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Climate change can have a vast effect on ocean currents because of the change in temperature it causes, which results in change in ocean water temperatures and a subsequent distortion in current flow.

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