Physics, 04.08.2020 14:01, paxbro3986
An electromagnetic wave is traveling through vacuum in the positive x direction. Its electric field vector is given by E⃗ =E0sin(kx−ωt)j^,where j^ is the unit vector in the y direction. What is the Poynting vector S⃗ (x, t), that is, the power per unit area associated with the electromagnetic wave described in the problem introduction?
Answers: 3
Physics, 23.06.2019 02:30, elishane864
Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.
Answers: 2
An electromagnetic wave is traveling through vacuum in the positive x direction. Its electric field...
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