Consider a green tree leaf of area 29.5 cm2 absorbing red light coming from the Sun as a plane wave with the wavelength of 650 nm and electric field amplitude 0.35 kV/m. Find the amount of energy absorbed in 1 hour. Take speed of light 3.00E8 m/s and vacuum permittivity 8.85E-12 F/m.

Consider a green tree leaf of area 29.5 cm2 absorbing red light coming from the Sun as a plane wave with the wavelength of 650 nm and electric field amplitude 0.35 kV/m. Find the amount of energy absorbed in 1 hour. Take speed of light 3.00E8 m/s and vacuum permittivity 8.85E-12 F/m.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 45P

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Question

Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.

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