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Q. Jingdan turned a screwdriver into a magnet by rubbing it with a strong bar magnet to pick up a screw that has fallen into an inaccessible spot.
How could he demagnetize his screwdriver after picking up the screw?
He could drop it, heat it, hit it with a hammer, or somehow otherwise jiggle the magnetic domains into randomness.
What is meant by tunnelling phenomenon? A tunnel diode is a high conductivity two-terminal P-N junction doped heavily about 1,000 times higher than a conventional junction diod
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Q. Give the differences between hard X-rays and soft X-rays.
Lorentz Transformation: The postulate of STR is proposed by Einstein in 1905. The two postulates are: 1. Principle of equivalence: According to this "The laws of physics
a 8 microfarad capacitor is charged to V=120V. the charging battery is then removed and the capacitor is connected in parallel to an uncharged 4 microfarad capapcitor. (a) what is
how can u call off the potential energy of an object when the world is full of refrences and the world itself is relative? what would be the potential energy for a object lying in
How to draw hr diagram including life cycle of the sun
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