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Helen [10]
2 years ago
13

What is an advantage of using wind for producing electricity instead of coal?

Physics
2 answers:
crimeas [40]2 years ago
8 0

Answer:

B. Obtaining Wind does not harm the environment, but Obtaining coal does

Explanation:

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

svetoff [14.1K]2 years ago
7 0

Answer:

Obtaining

Explanation:

<u>VERY VERY biased question and answers....</u>

 Wind turb<u>i</u>nes do significant damage to the environment.....from all of the mining required to obtain rare earth metals for the generator magnets to the non-recyclable blades to the enormous amounts of concrete required in pedestal construction ( mega - co2 emissions to make the concrete) to the transportation costs to the construction site  .   The also kill a significant number of birds and bats  AND contribute to noise pollution.  They ALSO require significant investment/costs/construction of transmission lines across the land to get from where the wind is to where the electricity is used.....  They are NOT great....but I think the answer they want you to spout is the second one.    But do not be brainwashed into believing they can replace fossil fuels.

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A 150 kg object takes 90 seconds to travel a 2500 meter straight path. It begins the trip traveling 120 meters per second and de
Nana76 [90]

The acceleration is -1.111 m/s²

Explanation:

In this case acceleration is calculated as change in velocity divided by time.

Change in velocity is 20m/s-120 m/s = -100 m/s

Time is 1.5 minutes------change it to seconds by multiplying 1.5 by 60 seconds

Acceleration will be : -100 m/s / (1.5*60) = -1.111 m/s²

Learn More

To calculate acceleration :brainly.com/question/856414

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3 0
4 years ago
According to the scientific theory of atoms, which of the following statements
olga_2 [115]

Answer:

gikjjc hgc  jmjuyv

Explanation:

5 0
3 years ago
When all else remains the same, what effect would decreasing the focal length have on a convex lens?
strojnjashka [21]

Answer:

It would cause the lens to produce only real images. It would cause the lens to produce only virtual images. It would make the lens stronger. It would make the lens weaker.

Explanation:

quizlet

5 0
3 years ago
You are traveling along a freeway at 65 mi/h. You suddenly skid to a stop because of congestion in traffic. Where is the energy
sergey [27]

The work and energy theorem allows finding the result for where the kinetic energy of the car is before stopping is:

    The energy becomes:

  • An important part in work on discs.
  • A part in non-conservative work due to friction.

Work is defined by the scalar product of force and displacement.

          W = F . d

Where the bold indicate vectors, W is work, F is force and d is displacement.

The work energy theorem relates work and kinetic energy.

            W = ΔK = K_f - K_o

In this case the vehicle stops therefore its final kinetic energy is zero, consequently the work is:  

          W = - K₀

Therefore, the initial kinetic energy that the car has is converted into work in its brakes.  In reality, if assuming that there is friction, an important part is transformed into non-conservative work of the friction force, this work can be seen in a significant increase in the temperature of the discs on which the work is carried out.

In conclusion, using the work-energy theorem we can find the result for where the kinetic energy of the car is before stopping is:

    The energy becomes:

  • An important part in work on the discs.
  • A part in non-conservative work due to friction.

Learn more here:  brainly.com/question/17056946

8 0
3 years ago
Consider a system to be one train car moving toward another train car at rest. When the train cars collide, the two cars stick t
oee [108]

Answer:

Momentum after = 2400 kgm/s

Explanation:

Momentum after = momentum before

Momentum after = m1v1 +m2v2

Momentum after = (600)(4) + (400)(0)

Momentum after = 2400 kgm/s

3 0
3 years ago
Read 2 more answers
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