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Unformatted text preview: Sheet1 Page 1 Close Window Viewing PHY 184B Message Thread Previous Message Next Message capa 10 1) Posted by tjslats on 07-28-2005 12:08 AM has anyone started this one yet? 2) Posted by Anonymous on 07-28-2005 12:22 PM Wow, can somebody PLEASE help out on these, I'm completely lost. PLEASE! 3) Posted by nicho199 on 07-28-2005 12:34 PM 3) part a E=sqrt((2I)/(cEo)) I=intensity given c=speed of light (3E8) Eo=constant=8.85E-12 Then the RMF=E/sqrt(2)=answer partb E=cB, solve for B E=what you solved for in the first equation in part a c=speed of light (3E8) Then the RMF=B/sqrt(2)=answer 4) Posted by Thomas7399 on 07-28-2005 02:39 PM hey thanks for the help on number 3, but you dont need to divide by the sqrt of 2 in part b 5) Posted by nicho199 on 07-28-2005 02:56 PM Hmm...thats strange that I divided my number by sqrt(2) in (b) and still got an acceptable answer...so I CAPA gave that questi 6) Posted by nicho199 on 07-28-2005 02:58 PM oops...I can't type. I meant "...so I guess CAPA gave.." Too much physics affects the brain. Sheet1 Page 2 7) Posted by Anonymous on 07-28-2005 02:59 PM what are the units for 3? 8) Posted by Thomas7399 on 07-28-2005 03:10 PM Three Polarizing Plates: I = I0*cos^2@ part 1: I = I0 (given) * cos^2 (@) part 2: I = I0 (part 1) * cos^2 (@-part 1 @) part 3: I = I0(part 2) * cos^2 (@-part 2 @) 9) Posted by Thomas7399 on 07-28-2005 03:11 PM V/m for E T for B 10) Posted by KBojangles on 07-28-2005 05:03 PM Hey all, I'm workin on this CAPA crap right now, so I will post as I go. 1) Electromagnetic Wave Concepts Select True or False for the following statements about electromagnetic waves. True: Gamma rays travel in vacuum at the same speed as the visible light. True: The sun's radiation is most intense in the visible region. True: Visible light is often emitted when valence electrons change their state. True: X-rays can be produced in transitions involving inner electrons in an atom. True: A vertical automobile antenna is sensitive to electric fields polarized vertically....
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This note was uploaded on 08/12/2008 for the course PHY 184B taught by Professor Nagy during the Spring '08 term at Michigan State University.
- Spring '08