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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.
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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
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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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AskPhysics Q&A
- Answered: which theory state that every molecule of magnetic substance is a tiny magnet
- Answered: Why machine get jammed in winter?
- Answered: what is a laser?
- What do you mean by reversible and irreversible process
- Why do we Study electric field along axial line?
- How Quantum Field Theory explains triboelectricity?
- Important topics to study for NEET Physics
- What are the most important topics in JAM Physics?
- If the size of the unit decreases by 20% the% change in the numerical value is
- Why is easier to hammer a sharp nail into wood than a blunt one?