We all know the trick of pretending to lose a cell phone connection, but the receiving person (in reality) can usually tell you have a good connection. This time, you are in luck- you are using a cell phone at 850 MHz, on one side of you is the cell phone tower, and on the other side, a tall building. 1) what is the wavelength of your cell phone transmission? 2) How far from the building should you stand to lose reception? 3) Since the phone companies employ good engineers, that trick won't actually work. However, you happen to see a chain-link fence nearby, and (out of desperation) try to use that as a diffraction grating to scatter the radiation. Estimating the link spacing as 5 cm, will this work?

We all know the trick of pretending to lose a cell phone connection, but the receiving person (in reality) can usually tell you have a good connection. This time, you are in luck- you are using a cell phone at 850 MHz, on one side of you is the cell phone tower, and on the other side, a tall building. 1) what is the wavelength of your cell phone transmission? 2) How far from the building should you stand to lose reception? 3) Since the phone companies employ good engineers, that trick won't actually work. However, you happen to see a chain-link fence nearby, and (out of desperation) try to use that as a diffraction grating to scatter the radiation. Estimating the link spacing as 5 cm, will this work?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Use the node-voltage method to find the steady-state expression for io in the circuit seen in (Figure 1) if ig= 4 cos2500t A and vg= 16 cos(2500t+90∘) V. Write the steady-state expression for io(t) as io=Iocos(ωt+ϕ), where −180∘<ϕ≤180. Find the numerical value of Io. Find the numerical value of ϕ.