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

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.

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.

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

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 !

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!!

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

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.

Hey

Billion of years ago, there was no solar system it was dust and gas particles floating in the space, once a star exploded ( supernova) that created gas particles which collapsed due to high forces of gravity and so it formed into a solar nebula, wherein a huge spinning like ring structure with particles revolving around in the ring.

Gradually the center part started evolving and a hot nucleus like Sun was formed wherein the particles in the ring started condensing and collapsing to form solid and huge rocks. Slowly the solid rocks started cooling and the one of the rock became Earth and others were the planet of Solar System, some rings couldn't form a rock structure but a gaseous giant like Jupiter. This happened around 4.5-5 billion years ago.

Hello aspirant

Msc in Environmental Science in Banaras Hindu university includes all these subjects. Eath and Ecological science, Atmospheric Science these are taught in fist and second semester and Environmental microbiology and Environmental biotechnology are covered in third semester.