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2 years ago

Which category of mechanical waves are produced during an earthquake?

Physics

1 answer:

andre [41]2 years ago

3 0

Answer:

The answer is C. Seismic waves.

Explanation:

<u>Seismic waves are waves of energy that travel through Earth's layers, and are a result of earthquakes.</u>

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An Earth satellite is orbiting at a distance from the Earth's surface equal to one Earth radius (4 000 miles). At this location,

Taya2010 [7]

Answer:0.25 times

Explanation:

Given

Distance of satellite from earth surface=Radius of earth

Force on the satellite is F=mg'

where g'=acceleration due to gravity at that point

Distance from center of Earth=R+R=2R

Gravitational Force is given by

$F=\frac{GM_1M_2}{r^2}$

Force $F=mg'=\frac{GMm}{4R^2}-----1$

Force on earth surface $F=mg=\frac{GMm}{R^2}------2$

Divide 1 and 2 we get

$\frac{g'}{g}=\frac{R^2}{4R^2}$

$g'=\frac{g}{4}$

7 0

3 years ago

Why is the pressure so high deep inside the outer planets?

AveGali [126]

Answer:

Due to its larger size

Explanation:

This is due to those planets being much larger than Earth. The larger a planet is, the more gravity that planet has, since gravity is mainly calculated based on the mass and radius of the planet. Also since the pressure deep inside of the planet depends mainly on the gravity of that planet on the surface, this is calculated as the square of the planet's surface gravity. Ultimately, the bigger the planet is the higher the pressure deep inside the planet will be.

3 0

3 years ago

The spring of modulus k = 200 n /m is compressed a distance of 300 mm and suddenly released with the system at rest. determine t

DiKsa [7]

I attached the missing picture.
Let's analyze the situation as spring goes from stretched to unstretched state.
When you stretch the string you have to use force against ( you are doing work) this energy is then stored in the spring in the form of potential energy. When we release the spring the energy is being used to push the two carts. When the spring reaches its unstretched length its whole initial potential energy has been used on the carts, and this is the moment when two carts have maximum velocity.
The potential energy of compressed ( stretched) spring is:
$E_p=\frac{1}{2}kx^2$
The kinetic energy of two carts is:
$E_{k1}+E_{k2}=m_1\frac{v_1^2}{2}+m_2\frac{v_2^2}{2}$
So we have:
$E_p=E_{k1}+E_{k2}\\ \frac{1}{2}kx^2=m_1\frac{v_1^2}{2}+m_2\frac{v_2^2}{2}$
Momentum also has to be conserved:
$m_1v_1-m_2v_2=0\\ m_1v_1=m_2v_2\\ v_1=\frac{m_2}{m_1}v_2$
Momentum before the release of the spring is zero so it has to stay zero. We plug this back into the expresion we got from law of conservation of energy and we get:
$v_2^2=\frac{m_1^2}{m_2^2-m_1^2}kx^2=4.05\\
v_2=\sqrt{4.05}=2.012\frac{m}{s}$
Now we go back to the momentum equation:
$v_1=\frac{m_2}{m_1}v_2\\
v_1=4.69\frac{m}{s}$

8 0

3 years ago

What are Prevailing Westerlies? a Calm area with rising air b Wind blowing West to East away from horse latitudes c Wind blowing

Gennadij [26K]

Answer:

b Wind blowing West to East away from horse latitudes

Explanation: prevailing Westerlies are winds which blows away from the horse latitudes, this type of wind blow towards the poles between latitude 30 degrees to latitude 60degrees.

Prevailing Westerlies are known to be strongest in the winter months in the and weakest in the summer months

They are also very strong when the pressures are low over the poles and also very weak when the pressures are high over the poles.

5 0

2 years ago

The same constant force is used to accelerate two carts of the same mass, initially at rest, on horizontal frictionless tracks.

tatiyna

Answer:

Option (c).

Explanation:

Let the mass of each cart is m and the force is F.

Time for cart A is 2t and for cart B is t.

Work done is given by the

W= force x displacement

As the distance is given by

S= u t +0.5 at^2

So, when the time is doubled the distance is four times.

So, WA = F x 4 S

WB = F x S

WA= 4 WB

4 0

3 years ago