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| can the moment of force be 0 even if the force is not 0, if so why???
guys I need the ans for  this plz!! :) |  | 
| asked by Einstien (ritashetty) 8 years ago | 
| 3 | 
| Why are the ends of the horse-shoe magnet used in dc motors semi-circular or curved? |  | 
| asked by Madhumati.S (madhums511) 8 years ago | 
| 2 | 
| Can someone please tell the correct formula for Gear Ratio
Is it nA/nB or nB/nA ? |  | 
| asked by        (sai7) 8 years ago | 
| 3 | 
| Can rocket's velocity change is mass is constant? |  | 
| asked by Prerak Modia (preee) 8 years ago | 
| 3 | 
| What is the reason for radioactivity??? |  | 
| asked by Sathvik Purushotham (sathvikroxxx) 8 years ago | 
| 2 | 
| MeGA doubt:
speed of sound depends on the density of the medium in which it propagates..
as density decreases speed increases
as we all know water is denser than air..( i think it is)
but the speed of sound is much higher in water than in air? why??? |  | 
| asked by Roshan Geo Roy (yoboyyy) 8 years ago | 
| 3 | 
| Do we need to do derivations in calorimeter chapter |  | 
| asked by satwindersingh333 8 years ago | 
| 1 | 
| Electromagnetic rays for detection of metals? 
X or Gamma? |  | 
| asked by  (heisenberg69) 8 years ago | 
| 2 |