Question

field has an ims strength of 34.3 mV/m? The wave travels in free space. How much energy is transported across a 1.30 cm area per hour by an EM wave whose Express your answer using three significant figures. AEO + O ? ΔΙ Submit Request Answer

Answer 1

Solution - Area A= 1.30cm² A = 1.30 x 150 m2 Rms strength of field & = 34.3 mV/m. - - - - 34.3 X103 Vm of Em-wave. The intensity I - ICto E2 I= IC Go E2 I= cto ( 11 ) co velocity of light = 3x108 m/s to: 8.85 x 1012 N-m/2 E = 34.3 x 103 V/m. whese

Thus I= 3x108 x 8,85 x 1012x (34.3x103) 2 I - 31235.81 x 100 I= 3.124 x 106 W/m2 This is intensity of light. The energy transportated in area A is E=I.A E = 3. 124 x 106 x 1.300 104 E=4006/24 10 10 w E 4.0612x1010 18 If time is shows, then = 4.0612 x 1010 3600 T/h F = 1.462 X156 /n pi'th:360083 The value of E= BU = 1.462X106 ith