I don\'t want thisworked out for me, but I would really appreciate it if someone

Question

I don't want thisworked out for me, but I would really appreciate it if someonewould explain what equations to use and why. I'm having a bitof difficulty with the concepts. Thanks!
I don't want thisworked out for me, but I would really appreciate it if someonewould explain what equations to use and why. I'm having a bitof difficulty with the concepts. Thanks!
(a) What is the wavelength of thesemicrowaves?
(b) What is the total energy contained in each pulse?
(c) Compute the average energy density inside each pulse.
(d) Determine the amplitude of the electric field and magneticfield in these microwaves.
(e) Compute the force exerted on the surface during the 1.00 nsduration of each pulse. Assume this pulsed beam strikes anabsorbing surface.

Explanation / Answer

(a)   you are given    f = 30 x109 Hz    and you know that thespeed of light is    c = 3.00 x 108 m/s. .       To find the wavelength, justuse     = c /f        and willbe in meters. . (b) You are given the average power is   20000 Watts, which is   20000 Joules per second. And youare told each pulse lasts    1.0 x10-9 seconds.    So now justuse: .          Energy = power * time        to get the energyfor each pulse in Joules. . (c) You know the area (of a circle) of each pulse.Find the length of each pulse by using speed * time. Then multiplylength and area to get the volume of each pulse. .         the energy densityis just the energy of the pulse (answer to part b) divided by thevolume of the pulse.

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