Manisha
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 Apr 10 comment Why does a glass rod when rubbed with silk cloth aquire positive charge and not negative charge? Vineet I am just asking that if positively charged glass rod can attract the paper pieces than why cant negatively charged silk cloth do the same.. Apr 10 awarded Commentator Apr 10 comment Why does a glass rod when rubbed with silk cloth aquire positive charge and not negative charge? According to Lagerbaer negatively charged silk rod cannot attract the paper pieces..and his explaination seems quite convincing. Apr 10 revised Why does a glass rod when rubbed with silk cloth aquire positive charge and not negative charge? edited title Apr 10 asked Why does a glass rod when rubbed with silk cloth aquire positive charge and not negative charge? Mar 3 comment Explanation about black color, and hence color john rennie also gave the same explaination as mine... Mar 3 answered Explanation about black color, and hence color Mar 3 comment What is the proof that the universal constants ($G$, $\hbar$, $\ldots$) are really constant in time and space? thanx Ron Maimon your answer really helped me a lot.now i will never irritate any of my physics teacher by asking whats the proof that it is a constant...I know very less about higher physics as i am just sixteen but then also i understood your ideas to very high extent ...this post was really helpful for me and i am sure i will look it in future also when my mind becomes at the level as yours... Mar 3 comment What is the proof that the universal constants ($G$, $\hbar$, $\ldots$) are really constant in time and space? what do you mean by MSSM people? Mar 2 awarded Supporter Mar 2 awarded Autobiographer Mar 2 asked What is the proof that the universal constants ($G$, $\hbar$, $\ldots$) are really constant in time and space? Feb 27 comment Why do far away objects appear to move slowly in comparison to nearby objects? I am very well convinced with the answer given above but then also there is only one doubt in my mind now ..Why the formula of relative velocity did not work here?please clear this doubt..your concerned answer will help me a lot.. Feb 27 accepted Compressibility factor Feb 27 comment Compressibility factor what i needed i got it...your comment was sufficient for me..thanx Feb 27 awarded Editor Feb 27 revised Why do far away objects appear to move slowly in comparison to nearby objects? added 103 characters in body Feb 27 comment Why do far away objects appear to move slowly in comparison to nearby objects? please answer my question i am waiting for your concerned reply. Feb 27 comment Why do far away objects appear to move slowly in comparison to nearby objects? ok i got you what you mean to explain but answer me one more question then....Is the formula of relative velocity which i mentioned in my question is applicable only for nearby objects then.. Feb 27 asked Why do far away objects appear to move slowly in comparison to nearby objects?