anonymous
  • anonymous
Although you can see the pencil, it appears broken in the glass of water. This is because A) electromagnetic waves cannot travel through solids. B) electromagnetic waves travel at different speeds through different media. C) electromagnetic waves compress more when they travel through denser media. Eliminate D) electromagnetic waves get closer together when they go through dense media like glass.
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1 Attachment
rvc
  • rvc
light from rarer medium to denser medium moves towards the normal
anonymous
  • anonymous
so b?

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More answers

rvc
  • rvc
|dw:1449762417143:dw|
rvc
  • rvc
@Michele_Laino what do you think?
Michele_Laino
  • Michele_Laino
your drawing is correct!
rvc
  • rvc
so the answer would be ?
Michele_Laino
  • Michele_Laino
I think that option B is \(not\) a wrong option
anonymous
  • anonymous
but is there another one that could be correct? just asking because if so i need to report this question to my teacher
Michele_Laino
  • Michele_Laino
according to the drawing of @rvc , I think that also option D is correct!
rvc
  • rvc
C i suppose
rvc
  • rvc
from denser to rarer ---> away from normal
Michele_Laino
  • Michele_Laino
sorry, electromagnetic waves don't compress any medium I think @rvc
rvc
  • rvc
oh i read the satement wrong oops
rvc
  • rvc
yep D
anonymous
  • anonymous
so only b?
anonymous
  • anonymous
D says objects like glass, wouldn't that be wrong because of that. But possibly correct if it said objects like water
Michele_Laino
  • Michele_Laino
if the statement "electromagnetic waves get closer together when they go through dense media like glass" means the concept illustrated by means of the drawing of @rvc, then also option D is correct!
anonymous
  • anonymous
Ok.
Michele_Laino
  • Michele_Laino
I remember that, the refractive index of glass is about \(1.3\) which is greather than the refractive index of air, which is about \(1\)
anonymous
  • anonymous
ok so B and D are both correct?
rvc
  • rvc
air is rarer in this case
rvc
  • rvc
glass is denser
rvc
  • rvc
brb
Michele_Laino
  • Michele_Laino
yes! nevertheless I think that the meaning of "electromagnetic waves get closer together when they go through dense media like glass" means that the wavefronts get closer together? That is my doubt!
anonymous
  • anonymous
Yeah
IrishBoy123
  • IrishBoy123
badly written question
Michele_Laino
  • Michele_Laino
in that case also option B is the right option!
anonymous
  • anonymous
yeah i agree its a very poorly written question
Michele_Laino
  • Michele_Laino
sorry, I meant this: in that case only option B is the right option!!
anonymous
  • anonymous
ok
IrishBoy123
  • IrishBoy123
it appears broken because the light appears to change direction and not even that is a causal explanation the actual reason has something to do with QCD......
anonymous
  • anonymous
yeah i know, thats why i posted this question because i didnt understand how it had to do with the answers
Michele_Laino
  • Michele_Laino
I think with QED, am I right? @IrishBoy123
IrishBoy123
  • IrishBoy123
why should light change direction just because it gets faster. why should it appear to take the path of least time. these are all still observations and i do not see how the word "because" appear in the question michele - C for chromo, i have a Feynman book that i don't understand....on this :-))))
IrishBoy123
  • IrishBoy123
but yes, QED.....is the bigger subject that i also don't understand :-)))
Michele_Laino
  • Michele_Laino
lol :) @IrishBoy123 I think you will be a good physicist one day!!
IrishBoy123
  • IrishBoy123
thank you maestro!!
Michele_Laino
  • Michele_Laino
:)
IrishBoy123
  • IrishBoy123
@mdjjh16 you got your answer yet my vote on this question is "haven't a clue what the question actually wants ..... soz :-(
anonymous
  • anonymous
im going with B
IrishBoy123
  • IrishBoy123
if i had to, i'd go B too
anonymous
  • anonymous
thanks for the help
Michele_Laino
  • Michele_Laino
here is my textbook on standard model which I have studied at university, it is very simple to read and it develops both QED and QCD: \[\begin{gathered} {\text{D}}{\text{.}}\;{\text{Griffiths}} \hfill \\ {\mathbf{Introduction}}\;\;{\mathbf{to}}\;\;{\mathbf{Elementary}}\;\;{\mathbf{Particles}} \hfill \\ {\text{J}}{\text{.}}\;{\text{Wiley}} \hfill \\ \end{gathered} \] @IrishBoy123
IrishBoy123
  • IrishBoy123
cheers michele, i'm definitely going to hunt that down.
Michele_Laino
  • Michele_Laino
ok! :)

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