2 years ago

What is the overall energy transformation in a coal-fired power plant?.

Physics

1 answer:

masha68 [24]2 years ago

4 0

Answer: thermal energy, mechanical energy and, finally, electrical energy.

Explanation:

As a type of thermal power station, a coal-fired power station converts chemical energy stored in coal successively into thermal energy, mechanical energy and, finally, electrical energy. The coal is usually pulverized and then burned in a pulverized coal-fired boiler.

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A maroon plane has a takeoff speed of 88.3 m/s and requires 1635 m to reach that speed. Determine the acceleration of the plane

tensa zangetsu [6.8K]

18.5164213 if you divide them both you get that number so the volceity is the number shown above.

6 0

3 years ago

Why is the answer B? I'm not sure which equation to look at when doing these proportion types of problems.

loris [4]

Explanation:

Given:

Δy = d

v₀ = 0

a = g

Find: v

v² = v₀² + 2aΔy

v² = (0)² + 2(g)(d)

v = √(2gd)

If we double d:

√(2g (2d))

√(4gd)

Compared to the first velocity:

√(4gd) / √(2gd)

√2

So the new velocity is √2 greater than the first velocity.

√2 v

7 0

3 years ago

2. A car with mass 2,500 kg is travelling at 15 m/s. What is the car's kinetic energy?

BabaBlast [244]

Answer:

c, 280,000J

Explanation:

You should use the equation KE (Kinetic Energy) = $\frac{1}{2} mv^2$

m = 2500

v = 15

KE = $\frac{1}{2} * 2500 * (15)^2\\$

KE = 281250 Joules.

This is consistent with the answer B, as all of the parameters given to you are rounded to 2 significant figures so naturally, the answer should also be rounded to 2 sig figs.

KE = 280,000 J

7 0

3 years ago

An infinite conducting cylindrical shell of outer radius r1 = 0.10 m and inner radius r2 = 0.08 m initially carries a surface ch

gayaneshka [121]

Answer:

Explanation:

Solution is in the picture attached

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3 years ago

Amorphous silica has a density of about 2.2 g/cm3, whereas the density of crystalline quartz is 2.65 g/cm3. Account for this dif

Alik [6]

<span>Amorphous silica has a density of about 2.2 g/cm3, whereas the density of crystalline quartz is 2.65 g/cm3
</span><span>The difference in densities is

The atoms in amorphous silica do not pack as efficiently in three dimensions as compared to the atoms in quartz.
hope it helps</span>

5 0

3 years ago

Read 2 more answers