Question

Suppose the electric field associated with the radio transmissions of a medical helicopter is given by E(x, t) = (700 N/C) cos((70 x 10-24 m-?)x – (2101 x 100s-)1] 1) Determine the wave number of the electromagnetic wave associated with the electric field. (Express your answer to three significant figures.) A X 10-2 rad/m Submit + 2) Determine the angular frequency of the electromagnetic wave associated with the electric field. (Express your answer to three significant figures.) 1 X 10 rad/s Submit + 3) Determine the wavelength of the electromagnetic wave associated with the electric field. (Express your answer to three significant figures.) m Submit + 4) Determine the frequency of the electromagnetic wave associated with the electric field. (Express your answer to three significant figures.) MHZ Submit +

Answer 1

4 Ausla E(~> +) = 700 un ) Cos (tokio am)x2 - (21071 x1056) + W on Composition with standard ware equacion: Elnut) = Eo Los [Kn-wt) that K = 70x10 a radom. :)" K=70.0 x Tx10² rad/m Ans. (2) W = 210 m x 10t rad's W=21.00 W XT klott rad/s. (3) K=2 t = 70 TX10 a a = 27 TOTX102 -2 = 200 22.86m 70 Any

(4) Also, W = 2 fed fare t 2.10. T X10 2 T x f 2 T =) = 210 71x106 105 X 10^ Ha Any