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Can light do some mechanical work?

“We know that sound can cause some mechanical work(eg:when we keep our hand in front of a large speaker,we feel something hitting the back of our hand), but why this doesn’t happen with light??” -Manishankar asks.

Electronic Regulator

Manishankar asked:

how an electronic circuit works as a regulator?

Nuclear Fission and Fusion

H Manishankar Asked:

which releases more energy?fusion or fission?

Ans:

per fission energy is more for fission, Per unit mass energy released is very much more for fusion

 

Mani again:

ok..bt our nuclear weapons are not powerful enough .. their energy is infinitesimally smaller than d energy released in natural process like earthquake volcano

Ans: Nuke weapons are targeted and sufficient to produce local destruction

Time Dilation in Relativity

Manishankar asks: “When we match the speed of light,it is said that time drags..does that mean we become old a little slower?If so,how?”

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Schrodinger’s Cat in Daily Life

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