qz6f08sol - PHY2054 Discussion-Fall 08 Quiz 6(Chapter...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
October 17, 2008 PHY2054 Discussion-Fall ‘08 Quiz 6 (Chapter 19.1-19.6) Name: UFID: *1. (5pts) An electron enters in a magnetic field with a velocity of 5.00 × 10 6 m/s perpendicular to and into the sheet. The magnetic field has an intensity of 3.00 mT, lies in the sheet and is directed as shown. Find the direction (you can just draw an arrow) and magnitude of the magnetic force on the electron. Since the velocity is perpendicular to the sheet, it is also perpendicular to the magnetic field. Therefore, F = evBsin90˚ = 1.6×10 -19 ×5×10 6 ×3×10 -3 ×1= 2.4×10 -15 N Since an electron has a negative charge, point your fingers in the direction opposite the velocity (out of the page) and curl your fingers to the direction of the field. Then your thumb points in the direction of the force. **2. (5pts) A wire having a mass per unit length of 0.100 kg/m is placed horizontally on a 30.0 ˚   incline, where there is a uniform vertical magnetic field. The wire carries a current of 2.00 A, and the coefficient of the kinetic friction between the wire and the incline is 0.250. What is the magnitude of
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern