An electromagnetic wave strikes an area of A= 5.29 imes 10^(-4)m^(2) section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be B_(rms)=2.11 imes 10^(-4)T. How long (time in milliseconds, ms ) does it take for the wave to deliver U=1,186J of energy to the wall? Note that 1.0s=1000ms. Therefore, multiply your answer by 1000 . Please round your answer to one decimal place.
Equations:
t=(U)/((/bar (P)))()/(b)
ar (P)=(cB_(rms)^(2))/(mu _(o)) imes A
where
c=3.0 imes 10^(8)(m)/(s) and mu _(o)=4pi imes 10^(-7)(Tm_(m))/((A))
An electromagnetic wave strikes an area of A= 5.29 x 10-4 m2 section of wall perpendicularly.The rms value of the wave's magnetic field is
(time in milliseconds,ms) does it take for the wave
to deliver U=1.186Jof energy to the wall? Note
that1.0 s=1000 ms.Therefore,multiply your answer by 1000.Please round your answer to one
decimal place.
Equations:
t= P
where
P- cB to
c=3.0108m/s and o=410-7Tm A