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pantera1 [17]
3 years ago
6

In what direction do seismic waves carry the energy of an earthquake?

Physics
2 answers:
irinina [24]3 years ago
8 0
Seismic waves carry energy from an earthquake away from the focus, through earth's interior and across the surface.
Oxana [17]3 years ago
3 0
<h3><u>Answer;</u></h3>

<em>Away from the focus</em>

Seismic waves carry energy from an earthquake <em><u>away from the focus</u></em>, through earth's interior and across the surface.

<h3><u>Explanation</u>;</h3>
  • <em><u>When an earthquake occurs energy is produced and is transmitted or released in form of a seismic waves.</u></em> Seismic waves are types of waves which results from an earthquake,<em><u> they are vibrations that move through the earth carrying energy</u></em> that has been released when an earthquake occurs.
  • The <u><em>focus is the point at which a rock that is under stress breaks and triggers and earthquake</em></u>. Seismic waves carry the energy released during an earthquake<em><u> away from the focus</u></em> through the earth in all directions.
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zubka84 [21]

(a) 25lx

(b) 11.11lx

<u>Explanation:</u>

Illuminance is inversely proportional to the square of the distance.

So,

I = k\frac{1}{r^2}

where, k is a constant

So,

(a)

If I = 100lx and r₂ = 2r Then,

I_2 = k\frac{1}{(2r)^2}

Dividing both the equation we get

\frac{I_1}{I_2} = \frac{k}{r^2} X\frac{(2r)^2}{k} \\\\\frac{I_1}{I_2} = 4\\\\I_2 = \frac{I_1}{4}\\\\I_2 = \frac{100}{4}  = 25lx

When the distance is doubled then the illumination reduces by one- fourth and becomes 25lx

(b)

If I = 100lx and r₂ = 3r Then,

I_2 = k\frac{1}{(3r)^2}

Dividing equation 1 and 3 we get

\frac{I_1}{I_2} = \frac{k}{r^2} X\frac{(3r)^2}{k} \\\\\frac{I_1}{I_2} = 9\\\\I_2 = \frac{I_1}{9}\\\\I_2 = \frac{100}{9}  = 11.11lx

When the distance is tripled then the illumination reduces by one- ninth and becomes 11.11lx

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3 years ago
According to Oxford Dictionaries, a spit take is an act of suddenly spitting out liquid one is drinking in response to something
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Answer:

The pressure is p_1 = 4051.4 \ Pa

Explanation:

From the question we are told that

     The gauge pressure at the mouth is  p_1

     The radius of the column is  r_2 =  4 \ mm  =  0.004 \ m

    The speed of the liquid outside the body is  v_2 =  3.1 \ m/s

      The area of the column is  A_2

       The area inside the mouth A_1 = 10 A_2

Generally according to continuity equation

       v_1 A_1 =  v_2 A_2

=>       v_ 1 = v_2 *  \frac{A_2}{A_1}

=>      v_ 1 = 3.1 *  \frac{1}{10}

=>        v_ 1 = 0.31 \ m/s

So

      A_1 = 10A_2

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=>   r_1 = 10 * r_2

substituting values

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Now the height of inside the mouth is  h_1 =  d =  2r_1 =  2* 0.04 =  0.08\ m

Now the height of the column is  h_2 =  d =  2r_2 =  2* 0.004 =  0.008\ m

Generally according to Bernoulli's  equation

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       p_1 = 4051.4 \ Pa

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3 years ago
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dolphi86 [110]

Answer:

i think it's 2km pm

Explanation:

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