Recent content by zade70

  1. Z

    For which incidence angle the ray won't come out of the prism's surface....

    What about the two equal sides of the prism. i didn't use this fact anywhere.
  2. Z

    For which incidence angle the ray won't come out of the prism's surface....

    Just did it.
  3. Z

    For which incidence angle the ray won't come out of the prism's surface....

    sin sigma/sin 90=1/2=> sin sigma= pi/6 rad. beta=180-90-30=60=pi/3 rad. (as the angle of two extensions is pi/2. sin alpha/ sin 60=2/1=> sin alpha/sqrt(3)/2=2=> sin aplha=sqrt (3)=1.7. I don't know where I am wrong.
  4. Z

    For which incidence angle the ray won't come out of the prism's surface....

    It is pi/2 rad or 90 degrees.
  5. Z

    Are the rays parallel after they come out of the prism?

    We are studying at the light just in the geometrical aspect. Can you give me a hist to solve it basing on it?
  6. Z

    For which incidence angle the ray won't come out of the prism's surface....

    http://s32.postimg.org/6fsfdz69x/image.png I am adding: pi/6 rad is the angle of incidence. The first refracted angle is pi/3 rad. sin pi/3/sina=1/2 sin a=1.7. Where am I wrong?
  7. Z

    When the incidence angle is equal to the angle of refraction

    a=b=0 rad? 0=0
  8. Z

    For which incidence angle the ray won't come out of the prism's surface....

    Homework Statement A ray of light falls on the surface AC of a prism with a straight angle and with two sides equal. For which incidence angle the ray won't come out of the surface AB. The index of refraction for the prism is n=2. Homework Equations sina/sinb=n2/n1 The Attempt at a Solution...
  9. Z

    Are the rays parallel after they come out of the prism?

    Homework Statement Two rays of light fall on a surface of the prism. Do they remain parallel after they come out from the prism? Homework Equations sina/sinb=n2/n1 The Attempt at a Solution I think they do, as the incidence angles are equal, the refraction angles are equal they become...
  10. Z

    When the incidence angle is equal to the angle of refraction

    when b= pi/2 rad. It is the limit angle for a. sina=n2/n1
  11. Z

    The distance between the incident point and the refracted point

    Homework Statement http://s32.postimg.org/4urcaq0xx/image.png The incidence angle of a light ray over a tile of glass with dy faces parallel is pi/3 rad. Find the distance between the incidence point and the refraction one of the ray with the tile, if the distance between these rays is 0.7 cm...
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    When the incidence angle is equal to the angle of refraction

    Homework Statement When the incidence angle is equal to the angle of refraction? Homework Equations sina/sinb=n2/n1The Attempt at a Solution I think as a=b => sina=sinb => n1=n2. We should have the same environment? But is that refraction?
  13. Z

    How Does the Angle Between Wires in a Magnetic Field Affect the Force on Them?

    Homework Statement Two wires AD and DC are put in the magnetic field with induction B=0.01T so that they form the angle pi/3 radian and the extremities A and C are in the same force line (what does it mean?). In the wires passes the current I=2A (intensity). Find the forces with which the field...
  14. Z

    Find the induction of the magnetic field at the point O

    Then how would the sketch be with the wires and inductivity?
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    Find the induction of the magnetic field at the point O

    How How about now? http://postimg.org/image/stsjq1a5z/