PHYS126 Supplementary Notes 7

PHYS126 Supplementary Notes 7 - PHYS126 Supplementary Notes...

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

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: PHYS126 Supplementary Notes 7 You will have a mid-term exam this week and Prof. Du has made the mid-term review in the lecture. So I just show some problems to you to review how to solve the problems. Please notice that the note will not cover the short answer questions. Q1. Observers in a frame S arrange for two simultaneous explosions at time t = . The first explosion is at the origin ( 29 1 1 1 x y z = = = while the second is on the positive x axis 4 light years away ( 29 2 2 2 4 , x c years y z = = = . How about two events as observed in a frame S traveling in the standard configuration at speed 0.6c relative to S. Is it a timelike interval or spacelike interval or lightlike interval? Solution: Using Lorentz Transformation: ( 29 2 x x vt y y z z vx t t c =- = = =- Then we can get ( 29 ( 29 ( 29 2 2 2 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 1 1 5 4 1 0.6 1 5 4 5 4 5 0.6 4 3 4 v c x x vt y z vx t t c x x vt c year c year y z vx c c year t t year c c = = =-- =- = = = =- = =- = - = = = =- = - = - Now lets calculate the ( 29 2 s In S frame, ( 29 ( 29 ( 29 ( 29 2 2 2 2 s c t x x = - = -...
View Full Document

This note was uploaded on 03/31/2011 for the course PHY 126 taught by Professor Hobunchan during the Spring '11 term at HKUST.

Page1 / 5

PHYS126 Supplementary Notes 7 - PHYS126 Supplementary Notes...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online