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physicsH7C-sp08-mt2-Kerth-exam

physicsH7C-sp08-mt2-Kerth-exam - 5 q Last Name(please prin|...

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5q;* Last Name (please prin| lXV,as,zS2- Student Number UMVERSITY OF CALIFORNIA AT BERKELEY DEPARTMENT OF PFIYSICS PHYSICS H7C SPRING SEMESTER 2OO8 LEROY T. KERTH Second Midterm Examination April 11, 2008 This examination is open book, notes or any other material you wish to use. Work all problems. They are of equal weight. Laptop computers are not allowed. 1 2 ^ J Total IL @
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l. Given two eventswith a four-vector interval between them [4,5,0,0]- Is the interval time like? ff so, find the speed of the frame in which the two events occur at the same place and the time betweenthem. Is the interval space like? If so, find the speed of the frame in which the two events occur at the same time and the distancebetween them. N* .'-k .,:, \ "rs . ..'1.. u}.ii "Y/ /v L 'g n "r q*4 >/) ,LI C L ./- -F '1 4b d ')t i i w Ll 1* I t r- { T: t i F r q I 4 t_.4 tt rl : (r I T #i t'i :"j t$ $ 4i #{ 7t f ) : I fr{ td '# ,1 $'$ *"i *f 'tgi di t7* ;Fl f, ltr ixlL ,.,1 t vt( \ B:1 f/,, >ft #$'$ {,d 1Pl / tg, .g f{ l'i l;.i 'tl y' ixl f \,1{ j- tr 7r/ ! vl I I J Ifi* "lt *T-l 5: #$'$ {a f g -</ >/t =,,,,( | I ir ,.f0,,' ,,, , ,-,.',,,* ', ,.., g:. t'" i ,i ;' : "tg"l "- 4 7ldr, - frt (t r *tii) ^: i oz 1;rIddr" ,?=,, i , V=',-9,iffW'- ___-._=ri ,,U il;;;" %-. 1-ll(, - .----1- > 4t -{4vt t , st t 9,/ *rt v) z4
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a. b. In the frame of the rocket who smiled first?
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