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morpeh [17]
4 years ago
9

Which of these is a possible disadvantage of using wind as a source of

Physics
2 answers:
vitfil [10]4 years ago
4 0

Answer:

D D D D D D D D  D  D D  D  D D  D D  D  D D  D D D D  D  D D D D  D  D D D D DD

Explanation:

gizmo_the_mogwai [7]4 years ago
3 0

Answer:

D. Wind turbines take up a lot of space.

Explanation:

In wind turbines the kinetic energy received by the air molecules is converted into electrical energy by the use of turbines

So here in order to get more kinetic energy from air we need more crossectional area of the wind mill to interact with the air

So here we need the large size of turbines

so this is the main disadvantage of the wind turbines because it needs large area to install the whole setup also the efficiency of this turbine is small so it needs large number of wind mills to setup good output power

so correct answer will be

D. Wind turbines take up a lot of space.

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As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road i
Kitty [74]

Answer:

<em>B</em><em>.</em><em> </em><em>Kinetic</em><em> </em><em>friction</em><em> </em>

Explanation:

This is definitely the correct answer because kinetic friction acts when an object is in motion and it allows the object to move without slipping, etc

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6 0
3 years ago
Read 2 more answers
When we move from 100x total magnification to 400x total magnification on a compound light microscope, what happens with resolut
gayaneshka [121]

1. a) In order to sharpen the objective with a 40x objective (400x total magnification), the objective must be closer to the sample than with a 10x objective (100x total magnification), so the sample is out of focus.

b) At 400x total magnification, the field of view is narrower than at 100x total magnification.

c) A 40x objective (i.e. 400x total magnification) has a higher numerical aperture than a 10x objective (i.e. 100x total magnification) and therefore provides better resolution.

d) Shallow depth of field.

e) The amount of light is reduced.

f) Shorter working distance.

2. The best objective for observing bacteria is the 100x objective, which is the immersion objective.

3. Without the addition of immersion oil, the sample will look blurry and will not give maximum resolution.

Learn more about sharpen here;

brainly.com/question/2075845

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5 0
2 years ago
What discovery lead J.J. Thomson to decide that atoms were not indivisible, but are actually composed of smaller parts? Thomson
Margaret [11]
Thomson used a beam of negatively charged particles.
8 0
3 years ago
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A simple pendulum with a length of 2.23 m and a mass of 6.74 kg is given an initial speed of 2.06 m/s at its equi- librium posit
solniwko [45]

Answer:

a)   T = 2.997 s

b)   K = 14.3 J

c)   φ = 0.444 rad

Explanation:

a) Determine its period

  The pendulum simple’s period is:

 

  T = 2π\sqrt{\frac{l}{g} }

        Where l: Pendulum’s length

                    g = 9.8 m/s2

  T = 2π\sqrt{\frac{2.23}{9.8} }

  T = 2.997 s

b) Total energy

  Initially his total energy is kinetic

  K = \frac{mv^{2} }{2}

  K = \frac{(6.74)(2.06)^{2} }{2}

  K = 14.3 J

c) Maximum angular displacement

  φ = cos^{-1}(1-\frac{E}{mgl} )

  φ = cos^{-1}(1-\frac{14.3}{(6.74)(9.8)(2.23)} )

  φ = 0.444 rad

4 0
3 years ago
Based on what you have read what will be another example of potential energy
almond37 [142]
The answer is A because potential energy is stored up energy which means that it’s not moving
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3 years ago
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