{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Quiz_4_sol

# Quiz_4_sol - Problem 1 0 =0 The plane z= separate air z = 0...

This preview shows page 1. Sign up to view the full content.

Problem 1 The plane z = 0 separate air ( z 0 , μ = μ 0 ) from iron ( z 0 , μ = 200 μ 0 ). Given that r H = 10 r i + 15 r j - 3 r k A/m in air, find r B in iron and the angle it makes with the interface. Solution: r B n i = r B n a =- 3 μ 0 r k , r H t i = r H t a = 10 r i + 15 r j r B t i = 2 × 10 3 μ 0 r i + 3 × 10 3 μ 0 r j r B i = 2 × 10 3 μ 0 r i + 3 × 10 3 μ 0 r j - 3 μ 0 r k tan ϕ = B n i B t i = 3(13 × 10 3 ) = 0 .8 × 10 - 3 0 .06 o Problem 2 An object’s image in a 27-cm-focal length concave mirror is upright and magnified by a factor of 3. What is the object distance? Solution: An upright image in a concave mirror must be virtual, so M = 3 = - d i / d o => d i = - 3d o 1 / d o - 1 / 3d o = 1 / 27 => d o = 18 cm (in front of the mirror).
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern