Cosmic microwave background radiation fills space with anaverage energy density of about 4 x 10-14 J/m3 (a) Find therms value of the electric field associated with this radiation.(b) How far from a 7.5-kW radio transmitter emitting uniformly in all directions would you find a comparable value?

Cosmic microwave background radiation fills space with anaverage energy density of about 4 x 10-14 J/m3 (a) Find therms value of the electric field associated with this radiation.(b) How far from a 7.5-kW radio transmitter emitting uniformly in all directions would you find a comparable value?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 93AP: On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by...

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Cosmic microwave background radiation fills space with an
average energy density of about 4 x 10^-14 J/m³ (a) Find the
rms value of the electric field associated with this radiation.
(b) How far from a 7.5-kW radio transmitter emitting uniformly in all directions would you find a comparable value?

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