Nos Answered: 2,4,5,7,8,9,11 (2.) R=(U^2sin2@)/g 78=(30*30 sin2@)/10 0.8667=sin2@ 2@=60 @=30 ================== (4) young modulus=stress/strain stress=F/A=35000/4=8750 strain=e/l=0.025/50=0.0005 young modulus=8750/0.0005=17500000 ======================== (5a)Gas can conduct electricity under low pressure and high votage. (5b)cathode ===================== ========================== (10)(a) The three characteristics of sound are: (i)pitch (ii)quality or timbre (iii)loudness or intensity. Factor on which each of them depends. (i)pitch depends on the frequency (ii)quality or timbre on the harmonics (iii)loudness or intensity depends on the amplitude. ============================= (11a.) EMF is the potential difference between the terminals of a cell when it is not delivering any current in an external circuit (11bi)when a steady current flows along a uniform wire, there is steady potential drop throughout its length. thus each unit length of the wire will have a constant P.D. across it (ii)-the potentiometer measures EMF correctly since no correction is needed to be made for the volt lost -it measures the EMF to a higher degree
Posted on: Wed, 09 Apr 2014 10:21:03 +0000
Trending Topics
Recently Viewed Topics
© 2015