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Get Full Access to Modern Physics For Scientists And Engineers - 4 Edition - Chapter 2 - Problem 26
Get Full Access to Modern Physics For Scientists And Engineers - 4 Edition - Chapter 2 - Problem 26

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# A mechanism on Earth used to shoot down geosynchronoussatellites that house laser-based

ISBN: 9781133103721 454

## Solution for problem 26 Chapter 2

Modern Physics for Scientists and Engineers | 4th Edition

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Modern Physics for Scientists and Engineers | 4th Edition

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Problem 26

A mechanism on Earth used to shoot down geosynchronoussatellites that house laser-based weapons isfi nally perfected and propels golf balls at 0.94c. (Geosynchronoussatellites are placed 3.58 104 km abovethe surface of the Earth.) (a) What is the distancefrom the Earth to the satellite, as measured by a detectorplaced inside the golf ball? (b) How much timewill it take the golf ball to make the journey to thesatellite in the Earths frame? How much time will ittake in the golf balls frame?

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After aceing your ﬁrst physics quiz,you decide to walk to Han Dynasty to celebrate with a nice lunch. You leave DRL and follow the green trafﬁc lights to get there quickly. Your route takes you north on 33rd St.to Chestnut St.,a distance to head north and walk to Market St.,a distance of 180 m. At Market St.,you turn left and walk west,the rest of theght way to the restaurant,a distance of 230 m. How far,in a straight line,is DRL from Han Dynasty A friend asks you where you just came from - if you point to DRL while standing in Han Dynasty,what angle should your arm make with Market Street ! ! ! ! HD dw d = d +d −1⎛dn ⎞ ! n1=170 m; ! !n !w Θ = tan ⎜ ⎟ Θ w 2 n2 n2=180 m; !n= n 1n 2 ⎝dw ⎠ ! ! ! ! ! w1 n dn w1= 400 m; dw= w +w1 2 d 1 w2= 230 m; ! 2 2 d = dn + d w DRL ! ! ! dn= n 1n =120m+180m = 350m ! ! ! dw= w +1 = 420m+230m = 630m ! 2 2 2 2 Distance from DRL to d = d n + d w = 350m +630m = 721m HD in a straight line. −1⎛ dn ⎞ −1⎛ 350 ⎞ Angle between your Θ = tan ⎜ ⎟ = tan ⎝ ⎠ = 29º arm an

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