Recent content by angiep410

  1. A

    Angle between B-Field and X-axis

    How did you get the magnetic field in part 1?
  2. A

    How do you find the diameter of a wire

    How should I get a length out of the density?
  3. A

    How do you find the diameter of a wire

    The actual question is: A 17.00 Ω resistor is made from a coil of copper wire whose total mass is 37.0 g. The resistivity of Cu is 1.68×10-8 Ω · m and its mass density is 8.90×103 kg/m3. What is the diameter of the wire? So would I use Ohm's law V=IR to find I?
  4. A

    How do you find the diameter of a wire

    Homework Statement I have a question where I'm given the voltage, mass, resistivity, and density of a wire and I need to find the diameter and the length. Can someone show me how to do both of these? Homework Equations I have no idea what equation would relate voltage, mass...
  5. A

    How do you find the width needed for a plane mirror

    I drew the picture, but I don't think I did it right. Would it be 18.1?
  6. A

    How do you find the width needed for a plane mirror

    So would it still be 11.5?
  7. A

    How do you find the width needed for a plane mirror

    Ah! That makes sense. But how do I find part B since I'm trying to find the width of the mirror?
  8. A

    How do you find the width needed for a plane mirror

    The angle of incident=the angle of reflection
  9. A

    How do you find the width needed for a plane mirror

    They aren't given. All that is given is what I have posted
  10. A

    How do you find the width needed for a plane mirror

    I would like to know the reason behind it and how to solve part B
  11. A

    How do you find the width needed for a plane mirror

    Homework Statement a) You wish to have a plane pocket mirror that is as discreet as possible but with which you can see the whole width of your face. If your face is 23.0 cm wide, what is the minimum width, in cm, of the mirror for you to be able to see the whole width of your face in one eye...
  12. A

    How do you find the difference in the angle of refraction?

    But I'm given that the wavelength of orange is 610 nm and the indices of refraction is n = 1.522 and the wavelength of violet is 410 nm and the indices of refraction is n = 1.538. So How do I set it up if I'm given all of this information?
  13. A

    How do you find the difference in the angle of refraction?

    so then I'm even more confused. So I have sin(36.7)= ? How do I set it up?
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    How do you find the difference in the angle of refraction?

    Homework Statement Sunlight strikes a piece of crown glass at an angle of incidence of 36.7 degrees. Calculate the difference in the angle of refraction between a orange (610. nm) and a violet (410. nm) ray within the glass. The indices of refraction for the orange and the violet are n = 1.522...
  15. A

    Finding the basis of a null space

    I was using the one I originally gave and you were right! I needed the two non-zero rows from the reduced matrix! thanks!