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How do I find the force on the charged sphere due to a dipole sitting inside?
forces electrostatics
12m ago
Qmechanic 11.3k
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How do the Einstein's equations come out of string theory?
general-relativity string-theory
16m ago
Qmechanic 11.3k
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Why does the spotlight reflected off of a rectangular mirror tend to become circular?
visible-light reflection
23m ago
Adnan 103