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HNQ
1:58 AM
1
Q: What are the other ways of energy transfer apart from heat and work?

AJknightIn my physics textbook I've seen that heat and work are non mechanical and mechanical forms of transfer of energy. Why can't electrical or chemical or nuclear energy or energies like that be a form of transfer of energy? Why is it only heat and work?

 
 
16 hours later…
HNQ
6:01 PM
2
Q: Would the emission lines of a very distant galaxy show no much traces of heavier elements as that part of universe was very young?

Krešimir BradvicaWould the emission lines of a very distant galaxy show no much traces of heavier elements as that part of universe was very young? Or there were enough time for an aboundance of hevier elements?

 
 
2 hours later…
HNQ
8:16 PM
2
Q: If light propagates like waves, why can't I see around corners?

erik mI know two different descriptions of how light propagates in space; (1) like particles traveling and reflecting in straight lines. And (2) like waves spreading and interfering in space. And that both these descriptions are true. It seems to me that scenario (1) is how I perceive the world. I can ...

 

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