An antena with P= 4.2×10³ W is radiating Sprierical electromagnetic waves. Consider Place which is d=z@om away from the antenna. a given: P= 4.2×10³ W d=280m I = P(umα²) (usaaz) a) Express I in terms of the electric field magnitude Emax, the speed of light C, and the permility of free space. 2 b) Find Emar² in terms or P,d, C, and No clisave the numerical varte of Emax in volts per meter.
An antena with P= 4.2×10³ W is radiating Sprierical electromagnetic waves. Consider Place which is d=z@om away from the antenna. a given: P= 4.2×10³ W d=280m I = P(umα²) (usaaz) a) Express I in terms of the electric field magnitude Emax, the speed of light C, and the permility of free space. 2 b) Find Emar² in terms or P,d, C, and No clisave the numerical varte of Emax in volts per meter.
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter2: Vectors
Section: Chapter Questions
Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...
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
Transcribed Image Text:An antena with P= 4.2×10³ W
is radiating Sprierical
electromagnetic waves. Consider
Place which is d=z@om
away from the antenna.
a
given: P= 4.2×10³ W
d=280m
I = P(umα²)
(usaaz)
a) Express I in terms of the electric field magnitude
Emax, the speed of light C, and the permility
of free space.
2
b) Find Emar² in terms or P,d, C, and No
clisave the numerical varte of Emax
in volts per meter.
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