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Displacement – A Numerical Problem
A fly is sitting in the middle of a wall of a cubic room of side ’a’.If it flies and sit to one of opposite corner of the wall. Find its displacement? (Harmeet Singh asked) Answer: If the fly sit on...
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Size of a soap bubble when charged
What will happen to the size of the soap bubble if the bubble is given charges ? Asked VARSHA UDAYAKUMAR Answer: When a soap bubble is charged, its size increases. Under normal condictions, a soap...
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Uniform Circular Motion in Horizontal Plane
In uniform horizontal circular motion, how are the vertical forces balanced? Asked Arjun M Nair Answer: If you are considering an object tied to a string and whirled with uniform speed in a horizontal...
View ArticleJEE 2013 emerges in its final form
The Joint Advanced Board (JAB) has announced that the Advanced JEE, scheduled to be conducted on June 2, 2013, will not be subjective and will retain IIT JEE 2012 format. The test will be conducted in...
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Question from Special Relativity
A spacecraft starts from earth moving at constant speed to planet A which is 20 light-hour away from Earth. It takes 25 hour (according to an earth observer) for a spacecraft to reach this planet....
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Time Dilation problem – Special Relativity
With what speed will a clock have to be moving in order to run at a rate that is one half the rate of a clock at rest? Posted by Mona Answer: Using the formula for Relativistic Time (according to...
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Force – Impulse – Momentum
Hi All! I’m having mega problems with one part of a physics assignment. Looking for any help. The details are as follows: The diagram shows the normal force on Christine’s feet vs. time, as recorded by...
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Refraction through a prism
For an equilateral prism , find two angle of incidence differing by 20 degrees showing same deviation of 40 degrees? Asked Atambir Singh Answer: Use the formula Here A = 60 degree (Since equilateral...
View ArticleJEE 2014 IS NEAR … How to do the last minute preparation?
The Engineering aspirants of India are now towards the last round of preparation JEE 2014. The paper pen phase of the 2014 edition of the JEE-Mains is scheduled for April 6 and the online examinations...
View ArticleWhat Extra Books shall I buy to excel in Class 12 Physics?
What Extra Books shall I buy to excel in Class 12 Physics? Answer: First of all you should possess the NCERT Text Books. This is a must for Indian Students (Especially for those doing the CBSE syllabus...
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