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Assume a hot system at temperature T placed in an environment at a lower temperature T0. The system emits more radiation than it absorbs and cools down whereas the surrounding absorb radiation from the systems and warm up. The system is losing power by emitting radiations at a rate.
What is the resistance of a coil of aluminium wire The resistance of a coil of aluminium wire at 18 ? C is 200?. The temperature of the wire is increased and the resistance
Distinguish among diamagnetic and ferromagnetic materials in respect of their (i) intensity of magnetisation, (ii) behaviour in a non-uniform magnetic field and (iii) susceptibilit
A thin rod of length 1 m is fixed in a vertical position inside a train, which is moving horizontally with constant acceleration 4 m/s2. A bead can slide on the rod, and friction c
Can multiple illuminators change colors simultaneously? Yes. Usually the standard disc rotating motors are of the synchronous form, very reliable, and geared to the most suffi
(a) You have studied that plane and convex mirrors produce virtual images of objects. Can they generate real image under some circumstances? Explain. (b) A virtual image we a
MANUFACTURING: T hese resistors do not require substrate. Resistive material is a mixture of finally ground graphite, filter and resin blander. Filter is usually silica. The mix is
how to perform experiment of deflection magnetometer,its concepts
Emission spectrum of hidrogen is different from emission spectrum of sodium.Why? Ans) Because, in sodium atom there are already many other electrons present in the atom aother than
Moderation: In a nuclear reactor, the fast moving neutron has to be slowed down by the use of Boron rods before they are able to cause further fission. The process of slowing d
What is the mass ms of one 294Uus atom, in SI units? Include the error bars in your answer, using 1 atomic mass unit 1u = (1.66053892 ± 0.00000007) × 10-27 kg.
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