{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

quiz1 - PHYSICS 2D PROF HIRSCH QUIZ 1 FALL QUARTER 2008 L =...

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

View Full Document Right Arrow Icon
PHYSICS 2D QUIZ 1 FALL QUARTER 2008 PROF. HIRSCH OCTOBER 10, 2008 Formulas : Time dilation; Length contraction: " t = # " t ' $ # " t p ; L = L p / # ; c = 3 % 10 8 m / s Lorentz transformation: x ' = " ( x # vt ) x = " ( x ' + vt ') y'= y , z'= z " = 1 1 # v 2 / c 2 y = y', z = z' t ' = " ( t # vx / c 2 ) t = " ( t ' + vx '/ c 2 ) Spacetime interval: ( " s ) 2 = ( c " t ) 2 -[ " x 2 + " y 2 + " z 2 ] Relativistic Doppler shift : f obs = 1 + v / c 1 ! v / c f source (approaching) Momentum: r p = " m r u ; " = 1 1 # u 2 / c 2 ; E = p 2 c 2 + m 2 c 4 Kinetic energy: K = ( " # 1) mc 2 Total energy : E = " mc 2 Rest energy : E 0 = mc 2 Electron : m e = 0.511 MeV / c 2 Proton : m p = 938.26 MeV / c 2 Neutron : m n = 939.55 MeV / c 2 Atomic mass unit : 1 u = 931.5 MeV / c 2 ; electron volt : 1eV =1.6 " 10 -19 J Justify all your answers to all problems Problem 1 (10 points) C B v=0.6c A A spaceship moves at speed v=0.6c with respect to the ground. An observer on the ground (point A) measures the time interval between the front of the spaceship (point B) and the back of the spaceship (point C) flying by him to be 1 μ s (10 -6 s). (a) As measured on the spaceship, how much time passed since the instant the front of the spaceship (B) passed by A and the back of the spaceship (C) passed by A?
Image of page 1

Info icon This 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