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Vanyuwa [196]
3 years ago
7

Please help me quick by answering these science questions.

Chemistry
1 answer:
emmainna [20.7K]3 years ago
6 0

Explanation:

Question 1:

It is better to use data from three or more seismic stations to find the epicenter of an earthquake because it gives a precise and accurate location better than using a lesser amount of data.

Finding epicenter of an earthquake works on the basis of triangulation.

  • The intersection between three circles gives the epicenter.
  • To triangulate, we simply use a radius value to draw a circle of appropriate size.
  • This is the distance of the station from the earthquake.
  • We know using seismograph that the first wave to arrive a point is the p-waves and the s-waves follows.
  • Disparity between the time of arrival and the velocity of the wave can give us the distance the wave must have traveled.
  • We take this data and draw circle of appropriate radius indicating the probable regions where the epicenter might be located.
  • This is a wide and indefinite volume of space.
  • Three circles using data from two more stations will give a perfect intersection.
  • More stations will further improve the accuracy and then we are sure of where the epicenter is.

learn more:

Epicenter brainly.com/question/11292835

Question 2:

P and S-waves are seismic elastic waves that travels within the earth. They are usually produce when a huge vibration travels within a substance or within the earth.

After the passing of the wave, the body returns back to its original form.

P-waves:

  • They are called primary waves.
  • They have the fastest velocity and the are the first to be picked up at a seismic station.
  • They can propagated through any material.
  • These waves are longitudinal waves moving in a series of rarefaction and compression.

S-waves:

  • They are secondary or shear-waves.
  • They are the second to arrive seismic station.
  • They cannot pass through fluids because they do not shear.
  • They are transverse waves that travels perpendicular to their source.

learn more:

Earthquake brainly.com/question/6520403

Question 3:

If a seismogram from a particular seismic station shows only P-waves, one can conclude that the material is only made up of fluid materials.

  • P-waves are primary waves capable of moving in any material medium.
  • They are longitudinal waves that propagates parallel to their source.
  • The reason why we cannot pick other seismic waves is that, s-waves cannot pass through fluids.
  • S-waves are secondary or shear waves.
  • Fluids cannot be sheared.
  • Only solids can shear.
  • Therefore, we can imply that since we see only p-waves the material is made up of only fluids.

learn more:

Seismic brainly.com/question/6520403

#learnwithBrainly

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pH < 7
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3 0
3 years ago
The best tool to use to locate the boundaries between countries is a(n) _____.
8_murik_8 [283]

The correct answer is (b) political map

The explanation:

when a political map: is different than other types of maps because it focuses on government or administrative boundaries rather than geographical or physical features. Instead of showing viewers what exists in the land, it shows those imaginary lines that serve to separate countries, states, territories, and cities. These maps generally include larger bodies of water, such as oceans, rivers, and lakes, as landmarks.

It was made by man not natural like the others maps.

so this is the correct answer.

8 0
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What has 6 valence electrons and 16 protons and ends withthe letter "r"
zmey [24]

Answer:

Sulphur

Explanation:

Sulphur(S) is the Sixteenth element of the periodic table and it has an electronic configuration of 2,8,6. This means it has six electrons in its outermost shell( valence electrons).

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4 0
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What is the valency of aluminium and nitrate in Al (NO3)3​
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6 0
3 years ago
The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to produc
Elis [28]

Answer: 9.9 grams

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) moles of H_2

\text{Number of moles}=\frac{8.150g}{2g/mol}=4.08moles

b) moles of C_2H_4

\text{Number of moles}=\frac{9.330g}{28g/mol}=0.33moles

H_2(g)+C_2H_4(g)\rightarrow C_2H_6(g)

According to stoichiometry :

1 mole of C_2H_4 combine with 1 mole of H_2

Thus 0.33 mole of C_2H_4 will combine with =\frac{1}{1}\times 0.33=0.33 mole of H_2

Thus C_2H_4 is the limiting reagent as it limits the formation of product.

As 1 mole of C_2H_4 give =  1 mole of C_2H_6

Thus 0.33 moles of C_2H_4 give =\frac{1}{1}\times 0.33=0.33moles  of C_2H_6

Mass of C_2H_6=moles\times {\text {Molar mass}}=0.33moles\times 30g/mol=9.9g

Thus theoretical yield (g) of C_2H_6 produced by the reaction is 9.9 grams

7 0
4 years ago
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