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erastovalidia [21]
3 years ago
12

How do scientists determine where an earthquake starts?

Physics
2 answers:
azamat3 years ago
5 0
Scientists use a method called triangulation to determine where the earthquake was. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake.
ra1l [238]3 years ago
4 0
<h2>Answer:</h2>

<u>They can find the starting point of earthquake </u><u>by seismometer</u>

<h2>Explanation:</h2>

The epicenter of earthquake can be found by calculating the distance of seismometer and the  time taken by it to reach the siensmometer. The meter is placed on a rock or somewhere where the surface is not shaky and a firm reading could be taken. They should be placed away from noise sources like traffic noise or any other noise. There are two types of waves that are taken into consideration. These waves are called P waves and S waves which are responsible for determining the location of the earthquake.

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Water has a mass per mole of 18.0 g/mol, and each water molecule (H20) has 10 electrons. (a) How many electrons are there in one
Allushta [10]

Answer:

total number of electron in 1 litter is 3.34 × 10^{26} electron

Explanation:

given data

mass per mole = 18 g/mol

no of electron = 10

to find out

how many electron in 1 liter of water

solution

we know molecules per gram mole is 6.02 ×10^{23} molecules

no of moles is 1

so

total number of electron in water is = no of electron ×molecules per gram mole × no of moles

total number of electron in water is = 10 × 6.02 ×10^{23} × 1

total number of electron in water is = 6.02×10^{24} electron

and

we know

mass = density × volume    ..........1

here we know density of water is 1000 kg/m

and volume = 1 litter = 1 × 10^{-3} m³

mass of 1 litter = 1000 × 1 × 10^{-3}

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so

total number of electron in 1 litter =  mass of 1 litter × \frac{molecules per gram mole}{mass per mole}

total number of electron in 1 litter =  1000 × \frac{6.02*10{24}}{18}

total number of electron in 1 litter is 3.34 × 10^{26} electron

8 0
3 years ago
Laskar, J.: 1990, The chaotic motion of the solar system. A numerical estimate of the size of the chaotic zones, Icarus, 88, 266
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7 0
1 year ago
A wheel is used to turn a valve stem on a water valve. How much is the mechanical advantage when an effort of 80 lbs. is applied
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Answer:

4

Explanation:

From the question given above, the following data were obtained:

Effort (E) = 80 lbs

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Mechanical advantage (MA) =?

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3 years ago
If a stone with an original velocity of 0 is falling from a ledge and takes 8 seconds to hit the ground, what is the final veloc
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