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NCERT book Solutions class-9 Gravitation (In Text Questions)

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These are NCERT solutions for class-9 chapter named Gravitation. Questions in this page are those questions that occur in between the texts at the end of each concept.and I have given the page number so you can find them easily in your book.
Page 134
Question 1
State the Universal law gravitation?
Answer
According to Universal Law of Gravitation every object in universe attracts every other object with a force known as Gravitational force.
It states that

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Nuclear Fission Basics

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Nuclear fission is said to have occurred when nucleus of an atom splits into several small fragments. In nuclear physics nuclear fission either occurs as a nuclear reaction or as a radioactive decay process in which nucleus of an atom splits into smaller and lighter nuclei. The fission process often produces free neutrons and photons (in the form of gamma rays), and releases a very large amount of energy even by the energetic standards of radioactive decay.

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free practice questions for JEE Mains and Advanced and other exams

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free practice questions for iitjee and other exams We have added free printable assignments for iitjee and other competitive exams along with their solutions. please visit this link assignments for following chapters were uploaded Heat Transfer Thermodynamics electricity electrostatics Mechanics Work and energy Optics Magnetism Rotation SHM Waves

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Solving physics problems

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Lots of time students me how can they solve physics problems and they say that they are having difficulty in solving physics problems. So here I decided to address this issue. Now first of all I would say that do not be afraid of the subject as I say again and again physics to me is most basic of all sciences and you must find the subject interesting and give yourself reasons for studying it for me it was just what I wanted to study till my masters degree and now I like helping students understanding physics.

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MATHS 9th CBSE QUESTIONS

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1) If X is any point in the interior of triangle ABC. Prove that XA+XB+XC> (1/2) (AB+BC+CA).

2) Using the factor theorem, factorize the polynomial
x4 + 2×3 – 13×2 – 14x + 24.

3) Factorize: 8×4 + 2×2 -1.
4)The sides of a triangle are in the ration of 13 : 14 : 15 and its perimeter is 84 cm.
Find the area of the triangle. Also find the altitude of the triangle corresponding to the longest side.

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Top Known Scientist in Heat and Thermodynamics Field

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James Prescott Joule (1818 – 1889)
•He was an English physicist and brewer, born in Salford, Lancashire.
•He received his early education at home
•He studied for sometime under John Dalton
•Joule studied the nature of heat, and discovered its relationship to mechanical work .
•His first major research was concerned with determining the quantity of heat produced by an electric current and, in 1840, Joule discovered a simple law connecting the current and resistance with the heat generated.

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