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reason behind earth magnetic field

Ronak Gala Student Expert 6th Jan, 2021

Hello,

One reason behind earth's magnetic field is that Dynamo effect in magnetic effect is caused by the outer metallic fluids present on the earth. And the rotation of earth further causes the the whole magnetic field. This field is really very important as it protects earth from Solar radiation.

1773 Views

Why Alkali metals and Alkaline earth metals have basic oxides. Explain with suitable reasons?

Sowmya Konkala 3rd Jan, 2021

hello aspirant,

"Basic oxides" is a compounds word of "Basic" and "oxides". The word oxides  referred to the chemical compounds that one or more oxygen atoms combined with another element such as h2o  or co2. Based on their acid-base characteristics oxides can be classified into four categories: acidic oxides, basic

7650 Views

The radii of the circular orbits of two satellites around earth are in the ratio 1:4. The ratio of their periods of revolution is: *

Atrayee Gayen 14th Dec, 2020

Hey aspirant,

According to Kepler's Law of Planetary motion, T^2 is directly proportional to R^3, where T is time period and R radius.

Therefore the ration of the time period is given as :- (T1/T2)^2 =(1/4)^3 = 1/64

So, T1/T2 = 1/8.

Hope this helps,

All the best!

288 Views

discuss the characteristics of the Earths with the basis of seismic evidences

Divyanshi Lal 5th Dec, 2020

Hello student,

I hope you are doing well.

Seismic tomography resolves anomalies interpreted as oceanic lithosphere subducted deep into Earth’s lower mantle. However, the fate of the compositionally distinct oceanic crust that is part of the lithosphere is poorly constrained but provides important constraints on mixing processes and the recycling

761 Views

describe the Earths interior with the help of a diagram on the basis of seismic evidences support your answer

U. Janani 4th Dec, 2020

Hi Yurom!

Seismic Waves occurs when earthquake is formed and spreads in all directions through the Earth's Interior which are recorded by the Seismic Stations.

Seismic Velocities depend on the factors of Material Properties such as composition, mineral phase, structure, temperature and pressure through which the Seismic Waves pass.

Below

897 Views

describe the Earths interior with the help of a diagram on the basis of seismic evidences

Abhishek Singh Tomar 4th Dec, 2020

When an earthquake occurs the seismic waves (P and S waves) spread out in all directions through the Earth's interior.

Seismic velocities depend on the material properties such as composition, mineral phase and packing structure, temperature, and pressure of the media through which seismic waves pass. Seismic waves travel more

38 Views

if a moon is away far from sun ,then the radius of a earth is how many kilometers

chinchujoseph1993 3rd Dec, 2020

Hello,

Your question is not very clear. If you are asking what is the radius of the earth then Its equatorial radius is 6378 km , but its polar radius is 6357 km. I hope this clears your doubt, If not please ask the question giving more details and we

1318 Views

Q. newtons second law of motion states that the time rate of change of momentum of the body is equal to the resultant force acting on it. using this law formulate a mathematical model to determine the terminal velocity of a free falling body near the earths surface. I dont know how to solve it.

Shivam Kumar 6th Nov, 2020

Hello Vennapusa charan kumar reddy,

Well, at the terminal velocity, its velocity will not change, hence its momentum will also not change and therefore rate of change of momentum is 0 or the accelaration will be 0 (since accelaration = rate of change of momentum ), so: At the terminal

2482 Views

Which of the following statement is false for a geostationary satellite? * 1 point (a) A satellite is stationary in space (b) Its angular speed is equal to that of earth above its own axis (c) Its time period is 24 hours (d) It revolves around the earth from west to east

Ayush 16th Dec, 2020

Hi Candidate,

A geostationary satellite moves from West to East and has a time period of Oscillation about it's axis which is equal to 24 hours same as the Earth. It pretends to be stationary with respect to the Earth but if we talk about the Angular Speeds of both

87 Views

what would happen if earth had more than one moon

Stuti Jain 8th Oct, 2020

Hello student.

Hope you are doing well.

As per the data collected, it is said that earlier there were two moons orbiting around the earth before it collided with present day moon.

The lunar havoc would have been increased causing massive tsunami's, earthquakes, volcanic eruptions. But it would have been

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