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1677 Views

the terrestrial part of earth is called?

Kanith Sawkar 8th Oct, 2020

Hi Sakshi,

Terrestrial part of Earth is called the Lithosphere. A lithosphere refers to the rigid, outermost shell of a terrestrial planet or natural satellite, which is defined by its rigid mechanical properties. Earth's lithosphere includes the crust and the uppermost mantle, which makes up the rigid and hard outer layer of the Earth. The lithosphere is subdivided into tectonic plates.There are two types of lithosphere, oceanic lithosphere, which is associated with oceanic crust and exists in the ocean basins. The second one is continental lithosphere, which is associated with continental crust or the land area on Earth.

Hope it is helpful.

3463 Views

what is solid angle subtended by the moon at any point of earth,given diameter of moon is 3474 km and its distance from the earth 3.84×10^8 m

Ayush 27th Sep, 2020

Hello,

Hope you are doing well.

As per your question, if we consider solid angle as theta then it is normally defined as theta equals to diameter upon distance . So it would be like 3.47 *10³ divide by 3.84*108 so this would give result as 9.0*10-.

So the solid angle subtended by the moon at any point of earth is 9.0 *10-.

So hope this information helps you out. Thank you.

271 Views

average height of satellite of mass 220kg above earth surface is 640km .it is losing its mechanical energy at a rate of 1.42×10raise to power 5 j in each revolution now answer 1 initial orbital speed 2 height of satellite after 1500 round 3 average regarding force on satellite

JAYA KARTHIKA RS 12th Sep, 2020

Hello,

a)Distance from earth's centre = 6400 + 640=7.04 x 10^6m

Now,

mv^2/r= GMm/r^2

V =   √GM/r  = √56.8 x 10^6

= 7.56 x 10^3 ms ^-1

(B) Total energy after 1500 rounds = Initial energy - Energy loss

= - GMm/2r- 1.42 x 10^5x 1500

=(- 6253-0213) x 10^9

= -6.466 x 10^9J

So, r = - GMm/- 6.466 x 10^9

= 6808 km

Its height above the earth's surface = 6808-6400

= 408 km

(C) Average retarding force, |F |=| dU/dr|

F = Energy loss/Distance

= 1.42 x 10^5/ 2 x 3.14 x 6.924 x 10^3 = 3.3 x 10^-3N

Hope it helps


758 Views

what is the exact shape of the earth in short

Sushree Sangita Sethi 27th Aug, 2020

Hello,

I hope u r safe and doing well.

So, Earth is an irregular shape with mountains , oceans and many more particles. Its shape has no particular name .It is unique shape neither we can call round or oval. This shape is very difficult to model mathematically. The most accurate would be oblate spheroid.With gps and from other satellite scientists can measure upto centimetres only.

I hope this helps u.



146 Views

I am getting 510 in NEET 2020. I want to take B.Sc course in Biology or Earth and Environment. Can I have scope for admission?

barkhapoptani 26th Sep, 2020

Hello there, congrats you have a great score. Apart from bsc you can go for mbbs and bds course. Your score will definitely get you a good college. Bsc in biology is also one of the best course. The duration is 3 years . After bsc you can update your reputation and improve your career by having a certificate of dialysis technology or in medical records management. You can be a professional teacher in biology and teach students of secondary and higher secondary schools.You can also get government jobs in the future. Hope this information helped you. I wish all the best for you. Check the link below which might help you find your rank and on the basis of rank , you will get a college under state quota.

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136 Views

what is earth and environmental science subject

nishant sharma 11th Aug, 2020

Hello student ,

Earth and environmental science subject is a subject of interdisciplinary .In earth science it includes study of geosphere or the rocks under our feet and deals with both active processes happening today (volcanoes, earthquakes, erosion ) and also topics in deep time (such as the history of life, how the continents came to be, etc. ) whereas Environmental Science as including other non Earth sciences such as biology, atmospheric science, toxicology, geography, sociology and political science .

Hope it will help you !



100 Views

the time period of a satellite of earth is 5h if the separation between the Earth and the satellite is increased to 4 times the previous value the new time period will become ?

Mounika Sonti 3rd Jul, 2020

Hello!!!

Hope you are doing great!!!

From Kepler's Third law,

T^2 is directly proportional to R^3

=(T1/T2)^2 = (R1/R2)^3

=(T1/T2)= (R1/R2)^3/2 = (1/4)^3/2

=T2/T1 = (4)^3/2

=8

=T2 = 8*T1

=8*5

=40hrs

Hope it helps!!

5526 Views

the elements which is very little in Earths crust and the elements negligible in human body respectively are

harshitasharansrivastava Student Expert 20th Jun, 2020

Hi Dear,

Both Earth and Human body is made up of many elements which is found in different proportions. If we talk about earth, then thulium, Scandium and yttrium are considered rare-earth elements. And in Human body, Silicon is the most negligible element present.

Hope this helps.. Good Luck

198 Views

while earth do motion we is not percieve?how is water up and down side change to side?

Soumili Majumdar 10th Jun, 2020
Hello there,
We know that the Earth rotates on its axis and also revolves around the sun, but, we cannot feel the motion. This is because the Earth spins at a constant speed. Also, the speed is very high. If the speed suddenly increased or decreased, we would have surely felt the difference.
For example, imagine you are in a car or a train which is running very fast, and also on a smooth surface. Then you would not feel much motion. Or, imagine yourself in an aeroplane. You don't feel motion there because it's moving with a high speed.
That's why we cannot feel the motion of the Earth.
Hope this answer helps you.
Thank you!
198 Views

I want to fill NET form in environmental science subject. but there are 5 subjects which one should i opt? ..plz guide me.. these subjects are 1. Life sciences 2. earth, atmosphere, ocean & planetary science 3. physical science 4. mathematical sciences 5. chemical sciences.

Akram Khan 16th May, 2020


Among the five subjects 5 subjects

1. Life sciences - the syllabus of the entrance is based on the major topics of life sciences.

2. earth, atmosphere, ocean & planetary science - syllabus covers the topics related to earth, environment, atmosphere etc.

3. physical science  - syllabus includes physics

4. mathematical sciences - syllabus includes mathematics

5. chemical sciences - syllabus includes chemistry.

So with environmental science the subject earth, atmosphere, ocean & planetary science will be.more related so if you want you can select this subject.


Hope you find it helpful.

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