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Given- u= 80km/hrs V= 60km/hrs T=5sec First change km/hrs in m/sec 80km/hrs=22.22m/sec 60km/sec=16.66m/sec a= v-u/t 16.66m-22.22m/5sec -5.56m/5sec= -1.112m s^-2

A binary number uses only two digits zero and one. In a binary system, numbers are represented as follows

 NUMBER AS INTEGER NUMBER IN BINARY 0 00 1 01 2 10 3 11 4 100 5 101 6 110 7 111

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Total energy = kinetic energy (KE) + potential energy(PE) KE > 0 since m and v2 is positive. If KE <0 particles cannot be find. If PE>TE, then KE<0 (now in all graph check for this condition) In case 1 kinetic energy is negative for x<a. So at x<a particle cannot be found. In case 2 for x<a and for x> b kinetic energy is negative. So the particle cannot be found in these regions. In the...
It cannot be said from the above-given graph whether the particle is moving along a straight line or along a parabolic path as the x-t graph does not tell us about the trajectory taken by the particle. From the given graph we can only say that the position of the particle along the x-axis does not change till time t=0 and after that it starts increasing in non-linear manner.

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(i) (a) All the points vibrate with the same frequency of 60 Hz. (b) They all have the same phase as it depends upon time. (c) At different points, the amplitude is different and is equal to A(x) given by   (ii)
Let the equation of oscillation be given by  Velocity would be given as  Kinetic energy at an instant is given by Time Period  is given by The Average Kinetic Energy would be given as follows The potential energy at an instant T is given by  The Average Potential Energy would be given by We can see Kav = Uav
Let A be a vector such that:-                  Then the magnitude of vector A is given by   :             Now let us assume that the angle made between vector A and x-axis is . Then we have:-                                                                                   Similarly, let B be a vector such that:-        The magnitude of vector B is     :                        Let  be the angle...
Cloning of organs is good but by cloning technique, the clone of human can also be made which will create social disturbance and fraud in the society.
Plastic surgery is good for the people who are victims of acid attack or fire burn. However, it also has side-effects.
Purification of water for drinking is very important for some of the regions as the people living there are having many water-related diseases. Also, the pure water is limited so we need to develop many techniques for purification of the water.
Development of new and powerful techniques of chemical and biological warfare is not good for society as it only has a bad effect on maintaining peace in the world. Further, they may also be used by terrorists which is harmful to safety for the citizens.
Nuclear weapons are the most dangerous weapons in the current world as they may wipe off not only a country but they also have long term effects. Thus nuclear elements should only be used for the generation of electricity.
The artificial satellite are good as they make the life of people more easier by providing modern days must facilities like internet connectivity, mobile network or GPS.
The computer can definitely decrease the human effort and increase efficiency so they are good progress in society. But it must be noticed that excessive use of a computer may lead to unemployment in the world.
Prenatal sex determination cannot be good for society as the thinking of modern people is to give birth only to a male child. So this will create imbalance by creating gender inequality.
Television for the eradication of illiteracy and for mass communication of news and ideas will be good as in the modern few are left behind so we need to make them literate in one form or the other for a better society.
The mass vaccination is very good for the society as the world has witnessed so many deaths due to the small pox virus.
Scientists as other human have hobbies and are humorists. For e.g, Albert Einstein had the hobby of playing the violin. So apart from doing their serious work on physics they also have fun in their lifestyle. Thus the image of science and scientists is patently false which states that science is tough and boring. You may read a few of the books which supports the above statement and tell you...
Books like ‘Surely you are joking, Mr Feynman’ by Richard Feynman are interesting books which should be read by the students who have a keen interest in the department of physics. These not only generate the interest but also teaches you path breaking laws of physics were evolved from a very basic incident.
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