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Law Incorporation [45]
3 years ago
12

One of the challenges of wind power is _____. the location of wind farms the ongoing cost of wind power that it adds carbon to t

he atmosphere as global warming increases, the wind will diminish
Physics
2 answers:
Mila [183]3 years ago
5 0
I think the correct answer from the choices listed above is the first option. One of the challenges of wind power is the <span>location of wind farms. Wind farms require large areas in order to function.  It consumes a lot of space. Hope this answers the question.</span>
Kay [80]3 years ago
3 0
<h3><u>Answer;</u></h3>

The location of wind farms

<h3><u>Explanation;</u></h3>

-<em><u>Wind power involves use of wind to generate electricity or mechanical power.</u></em> This happens when wind is used to turn blades then the turning blades spin a shaft connected to generator which converts kinetic energy to electrical energy.

-<em>Despite the advantages of wind such as little impact on environment, it has a number of challenges which includes;</em>

  • <em>Wind power is not as cost effective as fossil fuels.  </em>
  • <em>Noise pollution which has impact on birds </em>
  • <em>Other needs for land than energy generation </em>
  • <u><em>Wind sites are located far from urban areas, making it more expensive to transfer energy farther.</em></u>
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The diagram does not represent a real electric field because the field lines, can someone help explain this for me
Papessa [141]

electric field lines are graphical presentation of electric field intensity

It is the graphical way to represent the electric field variation

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So whenever we draw the electric field lines of a charge distribution then it will always follow this basic properties

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4 0
3 years ago
Before Mt. Everest was discovered, what was the highest mountain in the world?
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3 0
3 years ago
Two uniform, solid cylinders of radius R and total mass M are connected along their common axis by a short, light rod and rest o
sveta [45]

Explanation:

A) To prove the motion of the center of mass of the cylinders is simple harmonic:

System diagram for given situation is shown in attached Fig. 1

We can prove the motion of the center of mass of the cylinders is simple harmonic if

a_{x} = -\omega^{2}  x

where aₓ is acceleration when attached cylinders move in horizontal direction:

<h3>PROOF:</h3>

rotational inertia for cylinders  is given as:

                                  I=\frac{1}{2}MR^{2} -----(1)

Newton's second law for angular motion is:

                                             ∑τ = Iα ------(2)

For linear motion in horizontal direction it is:

                                             ∑Fₓ = Maₓ ------ (3)

By definition of torque:

                                               τ  = RF --------(4)        

Put (4) and (1) in (2)

                                       RF=\frac{1}{2}MR^{2}\alpha

                                       RF=\frac{1}{2}MR^{2}\alpha

from Fig 3 it can be seen that fs is force by which the cylinders roll without slipping as they oscillate

So above equation becomes

                                   f_{s}=\frac{1}{2}MR\alpha------ (5)

As angular acceleration is related to linear by:

                                          a= R\alpha

Eq (5) becomes

                                    f_{s}=\frac{1}{2}Ma_{x}---- (6)

aₓ shows displacement in horizontal direction

From (3)

                                              ∑Fₓ = Maₓ

Fₓ is sum of fs and restoring force that spring exerts:

                                  \sum F_{x} = f_{s} - kx ----(7)

Put (7) in (3)

                                  f_{s} - kx  = Ma_{x}[/tex] -----(8)

Using (6) in (8)

                               \frac{1}{2}Ma_{x} - kx =Ma_{x}

                                     a_{x} = \frac{2k}{3M} x --- (9)

For spring mass system

                                  a= -\omega^{2} x ----- (10)

Equating (9) and (10)

                                  \omega^{2} = \frac{2k}{3M}

\omega = \sqrt{ \frac{2k}{3M}}

then (9) becomes

                                a_{x} = - \omega^{2}x

(The minus sign says that x and  aₓ  have opposite directions as shown in fig 3)

This proves that the motion of the center of mass of the cylinders is simple harmonic.

<h3 /><h3>B) Time Period</h3>

Time period is related to angular frequency as:

                                   T=\frac{2\pi }{\omega}

                                  T = 2\pi \sqrt{\frac{3M}{2k}

                           

 

5 0
3 years ago
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