November 25, 2015

Homework Help: phy

Posted by kate on Wednesday, July 3, 2013 at 6:54am.

(Q1)the temperature at which the tungsten filament of a 12v and 36w lamp operates is 1730c.If the temperature coefficient of resistance of tungsten is 0.006/k, find the resistance of the lamp at room temperature of 20c (a)10.00(b)0.45ohms(c)0.39ohms(d)4.00ohms (Q2)At what temperature will the root-mean-square speed of oxygen molecules have the value of 640m/s?1 kilomole of oxygen has a mass of 32kg.(a)252.5(b)332.3(c)272.2(d)373.2 (Q3)calculate the average translational kinetic energy of a nitrogen molecule at 27c (a)0.0000000000621 (b)0.000000073(b)0.00000000542(d)0.00000000421

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