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myrzilka [38]
3 years ago
7

Which of the following if not a geographic boundary of Europe

Geography
1 answer:
Katyanochek1 [597]3 years ago
5 0
The alps or "c" is the right answer
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P and S waves from an earthquake travel at different speeds, and this difference helps locate the earthquake "epicenter" (where
Studentka2010 [4]

Answer:

(a) Since both P and S wave travels the same distance, so it can be written as:    Δx = V₁t₁ = V₂t₂,

Where, V₁- Speed of S wave

            V₂- Speed of P wave

            t₁- time taken by S wave

            t₂- time taken by P wave

Therefore, t₁ > t₂ (since, time taken by S wave is longer than P wave)

⇒ t₁ = t₂ + 1.5 min

⇒ t₁ = t₂ + 90 sec

⇒ V₁ (t₂ + 90 sec) = V₂ (t₂)

⇒ V₁t₂ + V₁ (90 sec) = V₂ (t₂)

⇒ V₂t₂ - V₁t₂ = V₁ (90 sec)

⇒ t₂ (V₂- V₁) = V₁ (90 sec)

⇒ t₂ = {V₁ (90 sec)} ÷ {(V₂- V₁)}

⇒ t₂ = {5.5 × (90 sec)} ÷ {(8.5 - 5.5)}

Therefore, t₂ = 165 sec

Since, Δx = V₁t₁ = V₂t₂

Now, Δx = V₂t₂ = (8.5 × 165 sec)

⇒ Δx = 1402 km

Therefore, Δx is approximately 1400 km (this means that the earthquake occurred at a distance of about 1400 km from the recorded seismic station)

(b) No, Only seismic station is not sufficient to detect the epicenter of an earthquake. Seismologists and geologists usually use the triangulation method in order to determine the exact location of the epicenter. This is possible by the use of three seismographs that are placed at three different locations nearby to that earthquake occurring position.

8 0
3 years ago
A circular water reservoir has a diameter of 0.6 kilometer. What is the approximate area covered by the reservoir? Use 3.14 for
fiasKO [112]

Based on the calculations, the approximate area covered by the reservoir is equal to 0.28 km².

<h3>What is the area of a circle?</h3>

The area of a circle simply refers to the space occupied or the region enclosed by a circle within its boundary, and in a two-dimensional plane.

<h3>How to calculate the area of a circle?</h3>

Mathematically, the area of a circle is calculated by using this formula:

Area = πr²

<u>Where:</u>

r is the radius of a circle.

<u>Given the following data:</u>

Diameter of circle = 0.6 kilometer.

π = 3.14.

Radius = 0.6/2 = 0.3 km.

Substituting the given parameters into the formula, we have;

Area = π × 0.3²

Area = 3.14 × 0.09

Area = 0.28 km².

Read more on circle here: brainly.com/question/14478195

#SPJ1

3 0
2 years ago
Which of the following items is NOT one of the five criteria listed for the strict definition of a MINERAL? Crystalline structur
Gala2k [10]

Answer:

Texture is not one of the five criteria listed for the strict definition of a mineral.

Explanation:

A mineral is generally defined as a naturally occurring solid chemical compound which is present in its pure from. A substance is said to be a mineral, if it satisfies the following five criteria: <u>naturally occurring, solid, inorganic, ordered internal structure, definite chemical composition.</u>

Therefore, a mineral is a naturally occurring solid inorganic substance with a well-defined chemical composition and specific crystalline structure.

<u>Therefore, we can say that</u><u> texture</u><u> is not one of the criteria that defines a mineral.</u>

6 0
3 years ago
How can the practice of tillage be harmful to the overall environment?
Oxana [17]
Tillage is a threat to the soil because it ruins the protective topsoil. hope it helps :)
4 0
3 years ago
_____steps, or essentials, of interpersonal conversation according to the video lecture.
Sav [38]
I believe that the answer is 7
3 0
3 years ago
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