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HNQ
1:52 AM
3
Q: If I'm in outer space, and suddenly start accelerating, will I feel it?

user9343456If I'm in outer space, initially at rest, and every single particle in my body accelerates at the same rate in the same direction, will I feel that? My brain is fried thinking about this. There are two possibilities: initially at rest and then accelerating with const acceleration w.r.t. some ine...

 
 
17 hours later…
HNQ
6:46 PM
1
Q: Where does the new electron come (beta particle) from in beta decay?

Rambal heart remoIn beta decay neutrons convert into proton, in that process they'll release an electron (called beta particle) but mass still remains same $$_zX^A \longrightarrow\; _{z+1}Y^{A}+ e^- $$ The question is where did that beta particle came out from no where like matter can't be created or destroyed?...

 
 
2 hours later…
HNQ
8:27 PM
1
Q: Why is it possible for us to "hear" acoustic phonons, but not optical phonons?

RedGiantThe name itself suggests that we can hear acoustic branch of phonon modes (and not the optical branch), but other than that I do not see any reason whatsoever why we are able to hear them. In order to be completely clear, I define the acoustic phonons as the ones with the property that $\omega \p...

 
 
3 hours later…
HNQ
11:25 PM
1
Q: Finding average speed of a body traveling between two points

rdev A body travels from A to B at 40 m/s and from B to A at 60 m/s. Calculate the average speed. Can't we just add the given speeds and divide by 2 to get the average speed? This way answer would be 50 m/s In my book, however, they calculated total time taken and distance covered separately and the...

 

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