A particle is revolving in a circle. Its angular speed increases from 2 rad/s to 40 rad/s in 19 sec. The radius of the circle is 20cm. Compute the ratio of its centripetal acceleration to its tangential acceleration at the end of 40s.
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Resistance of a metal wire of length 2m is 14 ohm at 20 degree Celsius if the diameter of the wire is 0.6 millimetre what will be the resistivity of the metal at that temperature
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