Frequently Asked Questions by Members

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• sir,
   but in my view, coulomb's law comes earlier than the gauss's law? so how can the proof will be found there why not by coulomb's law?
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• how will u express field lines of two negetive charge repel eachother.
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• sir
  is uncharged body or neutral body both have same meaning 
  i m confused 
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• Can a Direct current have variable magnitude and why ? . Explain 
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• sir, 
   why we use 4π in the constant. why don't we use any other constant like 2π, 3π?
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• A body of mass 10 kg explodes into three masses in the ratio 2 : 3 : 5.  Two light fragments fly off at right angle with velocity 12 m/s and 8 m/s.  Find the velocity of third fragment.
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• A bullet of mass m moving with a horizontal velocity v strikes a stationary block of mass M suspended by a string of length L. The bullet gets embedded in the block. What is the maximum angle made by the string after the impact?
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• again i have the solution but i didn't get it well plz explain me in just a lecture language
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• the work done in close loop by a conservative force in any case is zero but why?
  the first thing comes in my mind is that because it depends on initial and final path only but my question is why it makes the work done zero can we give me some mathematical expression to satisfy this statement
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• types of friction
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• No. of nuetrons present in 9mg O^{18 _{is ?}}
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• If one of the rectangular components of a velocity of 36 m/s has magnitude 26 m/s, then what is the magnitude of other rectangular component of velocity? BELOW I AM GIVING THE SOLUTION BUT I WANT TO KNOW HOW U CAN JUSTIFY TO USE V^2= V1^2+V2^2
  
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• plz telme wht s thesiunit of  energy and power
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• I don't  understand or get only partially what the following concept is saying. plz illustraten it with example
  
  "The shape of a trajectory of motion of an object is not determined by acceleration alone but also depends on initial condition of motion" 
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• 
  f(x) = (x² -5x + 6)^1/2 . find the range?  
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• Can i get above 300 marks in AIEEE as since i have just 20 days left for AIEEE exam? Please sir can you guide me as since i have not yet started with my AIEEE syllabus. how should i study within these days? And i am ready to follow whatever schedule you may be giving ...Plz sir .....
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• 
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• compair sin 1radian, sin degree
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• can  u plz elaborate the following statement, may possible with the help of diagram , what it is saying
  frictional  force is not parallel but prependicular to the direction of the velocity of the car
  <u can consider this in case of circular motion>
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• Question 10:
  How many directions are possible for the same horizontal range?
  Only oneTwoThreeFour Incorrect
  
  Correct Answer: B
  
  Two
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