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Application Of Right Triangle-Pythagoras Theorem
About 2500 years ago, a Greek mathematician Pythagoras found a revolutionary fact in a right triangle. He observed that in any right triangle, Square of the measure of the hypotenuse = Sum of the squares of the measure of the legs. This is one of the most famous theorems in ..
Dual Nature of Radiation and Matter (De Broglie's Hypothesis)
(who was then a strudent of master's degree) was engaged in the analysis of fundamental principles of light and mechanics. He found parallelism between these principles. He hypothesised that just as the electromagnetic radiation shows particle aspect, particles like electrons should exhib..
Activities
Let the students write down three facts each about several different substances with which they are familiar. Let them list how many of those facts they have found from their own C . observations. Let them also recall where they have learned each of these facts..
Long-Answer Questions
1. If each object in the universe attracts every other object, why don't two books kept on a table come towards each other and collide? 2. State Newton's law of gravitation and write the mathematical equation describing it. 3. What are the differences between G and g? Are both of ..
First law of thermodynamics
The first law of thermodynamics is the law of conservation of energy which includes heat energy. It is based on the fact that heat and mechanical energy are interconvertible and also that there is a thermodynamic quantity called internal energy. The law is stated as follows : The hea..
Practice Paper-14
. Find the expression of total energy of a satellite revolving around the surface of earth. What is the significance of negative sign in the expression ? - 3 23. What is em ideal simple pendulum ? Derive an expression for its time period. 3 24. A rocket is moving at speed of 200 ms-1 towa..
Example 5
. In this way all means were found and centred. Now, we draw the graphs of the given quarterly index numbers and the four quarterly averages as shown below: * . . The graph of the quaterly index numbers shows that every year the index number decreased in quarters 2,2nd 3, i.e., from April to Septem..
Force between Charges
You know that charges with the same sign (like charges) repel each other, and charges with opposite signs (unlike charges) attract each other. The force of attraction or repulsion between two small particles carrying chargesq^ and q2, separated by a distance r, is given by Coulomb's law. C..
Auditory Learners
is Trying, to Learn With: Use Learning Tools Such As: Linguistic Intelligence Words Writing materials, tape recorder, diar or journal, books, talking books, typewriter, word processor, alphabet shapes, stamp set, calligraphy set, trips to the library, crossword..