Question

answer this questions fully with clear handwriting.. do not copy answers from lther questions or people... must have similar given hints/answers

Problem II-B.2: Suppose the semi-horse shoe structure of the geometry illustrated in Fig.II-B.1 above, has the following numerical values for the entities marked: L = 10 cm; a 5 cm; w = 1 cm; h -0.5 cm. Further, ơ,-5x 107 S/m; ơ,-3x 104 S/m; and, ơ3 2x 103 S/m. This metallic structure is used to heat 1 liter of paraffin oil of density equal to: 800 kg/m' and of specific heat: 2.13 kJ/kg/°C. And, when an ac voltage of [155 x sin(2n × 60t)] volt is applied across the terminals A and B, the temperature of the oil raises to 100°C from the room-temperature of 30°C. Determine the time taken to realize this temperature increase. Assume an efficiency of 95% in electric energy to heat energy conversion. Solution hints: Electric energy dissipated = [Power in watts (P) × Time in sec ( joules Convert this energy (in joules) with specified efficiency into heat energy in calories Heat dissipated: [Mass × specific heat × temperature difference] calories Hence, solve for the time, t.

Answer 1

町 5x101 sInA loSu 13 kIlc ISS sin ( 3x x 60 t voltage Solluthon Soha on,Electicerengyds.cipadl pouceo.inwath tp)XJmalanse.4 Electaic enegy Toula Elec-tacal e eveogy u only clissipateol in foaw f hua, Hs, ISS huat cliss Csspa Density -mauyau volume 3 a.R conduchu

2 sub qil Value in equahon calot e 4.184