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What is the reason for radioactivity??? |
![](//pl.respaper.com/64/sathvikroxxx.jpg) |
asked by Sathvik Purushotham (sathvikroxxx) 7 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??? |
![](//pl.respaper.com/64/yoboyyy.jpg) |
asked by Roshan Geo Roy (yoboyyy) 7 years ago |
3 |
Do we need to do derivations in calorimeter chapter |
![](//pl.respaper.com/64/satwindersingh333.jpg) |
asked by satwindersingh333 7 years ago |
1 |
Electromagnetic rays for detection of metals?
X or Gamma? |
![](//pl.respaper.com/64/heisenberg69.jpg) |
asked by (heisenberg69) 7 years ago |
2 |
If gravity is attractive then why did the big bang occur and why is the universe expanding?
(Is it dark energy) |
![](//pl.respaper.com/64/catlover.jpg) |
asked by Catlover (catlover) 7 years ago |
2 |
WHAT IS PHI (YEAH ITS OUT OF SYLLABUS)
BUT DOES ANYONE KNOW THE STORY OF IT/ITS VALUE? |
![](//pl.respaper.com/64/xxskullkingxx.jpg) |
asked by Illuminati (xxskullkingxx) 7 years ago |
1 |
Why does an empty test tube placed inside water shine like a mirror? |
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asked by Ansh Thamke (ansh_cr7) 7 years ago |
2 |
Just want to confirm. On which principles do the dc motor and ac generator based. |
![](//pl.respaper.com/64/shivaanee22.jpg) |
asked by Shivaanee sharma (shivaanee22) 7 years ago |
1 |