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Prediction of New Elements
Based on the positions in the periodic table, Mendeleev could predict the properties of some undiscovered elements. He left three blanks for elements that were not discovered at that time. He was able to predict the properties of these unknown elements more or less accurately. He named t..
Bill bought a rectangular carpet. His mom asked him to buy one more ca..
Bill bought a rectangular carpet. His mom asked him to buy one more carpet whose dimensions are twice that of the one he bought. How will the perimeter of the new carpet differ from the one that Bill bought? => will be two units more than the one Bill bought or will be..
At the position A
Kinetic energy of the body = 0 (Since the body is at rest, i.e., v = 0) Potential energy of the body = mgh. Therefore the total mechanical energy = mgh + 0 = ..
Asking permission
Can I ask you a question? Could I ask you a personal question? ( more formal, polite or indirect..
Some years back Carol was traveling by a cargo ship from New Zealand t..
Some years back Carol was traveling by a cargo ship from New Zealand to Tahiti. She was curious to look around the ship one day, and in the boiler room she asked a man how old the ship was. He smiled and replied 'The ship is twice as old as the boiler now. And the comb..
New Needs
Lamarck suggested that new needs arise in the organisms as the ever-changing environment influences them. Changes in the environment create a new need in the organism for adapting to that change, failing which the organism cannot surviv..
Amongst a group of patients who complained of severe body pain, some w..
Amongst a group of patients who complained of severe body pain, some were given a new analgesic on trial and some were given a placebo. They were later asked whether the pain relievers were effective. The results were presented in the following table. Pain relieved Pain continue..
Positive Acceleration
If the velocity of an object increases then the object is said to be moving with positive acceleration...
If the velocity of an object increases then the object is said to be moving with positive acceleration...Position isomerism
Haloalkanes with three or more carbon atoms exhibit position isomerism in which the isomers differ in the position of halogen atom. For example, C 3 H 7 I has two position isomers:..
Haloalkanes with three or more carbon atoms exhibit position isomerism in which the isomers differ in the position of halogen atom. For example, C 3 H 7 I has two position isomers:..Position vector
A vector which gives the position of a point with reference to the origin of the coordinate system is called position vector. The figure above illustrates the position vector of a particle moving in the X-Y plane. Let the particle be at P at any instant of t..
A vector which gives the position of a point with reference to the origin of the coordinate system is called position vector. The figure above illustrates the position vector of a particle moving in the X-Y plane. Let the particle be at P at any instant of t..See what our Users say :
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