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ASHA 777 [7]
3 years ago
6

What is the purpose of an man made ecosystem

Physics
1 answer:
alexandr402 [8]3 years ago
3 0
Usually to preserve the organisms (maybe the organisms are endangered species or need to be protected in some other way). Another reason could be for the benefit of mankind (for example, an artificial river provides recreational purposes)
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7) Se calcula dividiendo distancia entre tiempo
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Answer:

A) Rapidez

Explanation:

Speed is a scalar quantity and it is found by dividing the distance traveled by the time taken.

 Speed  = \frac{distance}{time}  

Distance is the length of path covered whereas time is the duration of the travel.

Unlike velocity which is a vector, speed is a scalar quantity with only magnitude but no direction.

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The gravitational force between Earth and the Sun is a two way force. Both the planet and the Sun attract each other. However, E
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Addition of a metal slab of thickness "a" between the plates of a parallel plate capacitor of plate separation "d" is equivalent
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Answer:

K =  \frac{d}{d+a}

Explanation:

The capacitance of a capacitor in terms of the dielectric constant, area of the plate and the distance separating the plate is given by:

C = \frac{\epsilon A}{d}

Where A = Area of the plate

d = distance between the plates

\epsilon = dielectric constant

Case 1:

When a meta slab of thickness, a, is added between the plates of the parallel plate capacitor , the effective separation between the plates becomes d+a

Therefore the capacitance of the capacitor becomes:

  C = \frac{\epsilon A}{d + a} .......................(1)

Case 2:

Introducing a dielectric with dielectric constant K between the plates, the capacitance of the capacitor becomes:

C = \frac{K\epsilon A}{d}.........................(2)

Equating (1) and (2)

\frac{K\epsilon A}{d} = \frac{\epsilon A}{d+a}\\\frac{K}{d} = \frac{1}{d+a} \\K = \frac{d}{d+a}

3 0
3 years ago
2. Which part of a refracting telescope forms the image?
Bezzdna [24]

<em> In a refracting telescope </em><u><em>convex lens</em></u><em> forms the image. </em>

<u>Answer:</u> <em>c. Convex mirror</em>

<u>Explanation:</u>

Telescope is an instrument used for magnification of distant objects. The convex lenses objective and eyepiece are the two parts of a refracting telescope.  

Objective has a greater focal length when compared with the eyepiece. Image of a distant object is formed at the second focal point of the objective. This image is magnified by the eyepiece.  

The objective and eyepiece lenses can only produce an inverted image since they both are convex lenses. The function of producing a final erect image is performed by a pair of inverting lenses.

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2 years ago
During science class while studying mixtures you mix together iron fillings and sand. You're a teacher challenges you to separat
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Answer:

Explanation : we use the magnet to separate the sand from the iron filing. Because the magnet has an attraction power.Mar 18, 2018

Explanation:

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