98. A particle is moving along a circular path. The angular velocity, linear
velocity, angular acceleration and
centripetal acceleration of the particle
at any instant respectively are as a
and We Which of the following
relations is not correct?
(1) 18
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What produces light and all other electromagnetic waves? a) the photoelectric phenomena b) heated metals c) charged particles d) radioactive samples (pls explain if you can : )

Convection occurs when thermal energy is transferred by the movement of

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?