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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 are bare fibers? It used mostly with PMMA fibers and refers to the optics which have no external protection sheath.
We all know that some astronaut had landed in the moon to check out how''s going on the moon. But why only a few astronaut? People created the Apollo and they made it. They sent so
Explain electric lawn-mower A television set having a power rating of 120W and electric lawn-mower of power rating 1 kW are both linked to a 240V supply. If 3A, 5A and 10A
a rocket is projected upwards with a velocity of 490. find te time taken to reach the ground
As defined in physics, work is: a) A scalar quantity b) Always a positive quantity c) A vector quantity d) Always zero Ans: As defined in physics, work
A space explorer is moving through space far from any star or planet. He notices a large rock, taken as a specimen from an alien planet, floating around the cabin. could he push is
Lenz's law (H.F. Lenz; 1835): An induced electric current always pass in such direction that it opposes the change generating it.
Using a lever Determine that the longer end of a lever travels farther and faster than the shorter end when the fulcrum is not in the centre. A baseball or cricket bat makes us
what happens to a conical pendulum when the bob splits into two parts such that one part remains attached to the string?
investigatory poject class 12
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