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Minchanka [31]
2 years ago
13

We use coal, crude oil, and natural gas to generate electricity in _____________.

Physics
2 answers:
tresset_1 [31]2 years ago
5 0

Answer:

<u>thermal power stations</u>

Explanation:

these resources are burned to produce the electricity.

balandron [24]2 years ago
3 0
I think the answer is b.thermal power stations
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Which of the following statements are true? Check all that apply. Check all that apply. The gravitational force between two obje
uysha [10]

Explanation:

The gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. Mathematically, it is given by :

F\propto \dfrac{m_1m_2}{r^2}

F=G \dfrac{m_1m_2}{r^2}...............(1)

Where m₁ and m₂ are masses

r is the distance between them

It is clear from equation (1) that :

1. The gravitational force between two objects is inversely proportional to the square of the distance between the two objects.

2. The gravitational force between two objects is proportional to the product of the masses of the two objects.

Hence, this is the required solution.

3 0
3 years ago
Read 2 more answers
A superhero flies 285 m from the top of a tall building at an angle of 35◦ below the horizontal.
iren2701 [21]
287.14108 it simple prantherogram theorem 
 
7 0
3 years ago
A disk ring of inner radius a and outer radius b lying on the y − z plane has a uniform surface electric charge density +σ(&gt;
solmaris [256]

Answer:

a)  V = k 2π σ (√(b² + x²) - √ (a² + x²)) ,  

b)  E = - k 2π σ x (1 /√(b² + x²) - 1 /√(a² + x²))

Explanation:

a) The expression for the electric potential is

        V = k ∫ dq / r

For this case, consider the disk formed by a series of concentric rings of radius r and width dr, the distance of each ring to point P

         R = √(x² + r²)

The charge on a ring is

        σ = dq / dA

The area of ​​a ring is

        A = π r

        dA = 2π r dr

So the charge is

        dq = σ  2π r dr

We substitute

       V = k σ 2pi ∫ r dr / √(r² + x²)

We integrate

       V = k 2π σ √(r² + x²)

We evaluate from the lower limit r = a to the upper limit r = b

      V = k 2π σ (√(b² + x²) - √ (a² + x²))

 

b) the electric field and the potential are related

        E = - dV / dx

        E = - k 2π σ (1/2 2x /√(b² + x²) - ½ 2x /√(a² + x²))

        E = - k 2π σ x (1 /√(b² + x²) - 1 /√(a² + x²))

7 0
3 years ago
A crane lifts a 400 N crate full of baked beans 15 m. How much work was done by the crane?
damaskus [11]

Answer:

6000 J

Explanation:

work = F x S

work = 400 x 15

work = 6000 J

3 0
3 years ago
When electrons are accelerated by 2450v in an electron microscope they will have wavelengths of
Sholpan [36]
I think the answer is A I’m
Not sure tho
5 0
2 years ago
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