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23 Nov 2019

A spaceship passes you at a speed of 0.52c. It has a rest length of48.5 m. How long is it in yourframe?
1________________ m

You are traveling in a spaceship at a speed of0.6c away from Earth. You send a laserbeam toward Earth traveling at velocity c relative to you.What do observers on the Earth measure for the speed of the laserbeam?
1________________ c

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Jarrod Robel
Jarrod RobelLv2
14 Nov 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

(a) A spaceship with a proper length of 102 m passes an observer ata speed of 0.95937c.What is the length of the ship as seen by theobserver?
_________ m

(b) How much would you age in traveling a distance of 5.01 lightyears from earth if you were able to travel at a speed of0.916c?
_________ years

Star A and Star B are at rest relative to Earth. Star A is 24 c � yfrom Earth, and as viewed from Earth, Star B is located beyond(behind) Star A.
(a) A spaceship is making a trip from Earth to Star A at a speedsuch that the trip from Earth to Star A takes 10 y according toclocks on the spaceship. At what speed, relative to Earth, must thespaceship travel? (Assume that the times for the accelerations arevery short compared to the overall trip time.)
in terms of c.

(b) Upon reaching Star A, the spaceship speeds up and departs forStar B at a speed such that the gamma factor, ?, is twice that ofPart (a). The trip from Star A to Star B takes 5.1 y (spaceship'stime). How far, in c � y is Star B from Star A in the rest frame ofEarth and the two stars?
in terms of c � y.

(c) Upon reaching Star B, the spaceship departs for Earth at thesame speed as in Part (b). It takes it 13 y (spaceship's time) toreturn to Earth. If you were born on Earth the day the ship leftEarth and you remain on Earth, how old are you on the day the shipreturns to Earth?
in terms of y.

Star A and Star B are at rest relative to Earth. Star A is 24 c · yfrom Earth, and as viewed from Earth, Star B is located beyond(behind) Star A.
(a) A spaceship is making a trip from Earth to Star A at a speedsuch that the trip from Earth to Star A takes 10 y according toclocks on the spaceship. At what speed, relative to Earth, must thespaceship travel? (Assume that the times for the accelerations arevery short compared to the overall trip time.)
in terms of c

(b) Upon reaching Star A, the spaceship speeds up and departs forStar B at a speed such that the gamma factor, ?, is twice that ofPart (a). The trip from Star A to Star B takes 5.1 y (spaceship'stime). How far, in c · y is Star B from Star A in the rest frame ofEarth and the two stars?
in terms of c · y

(c) Upon reaching Star B, the spaceship departs for Earth at thesame speed as in Part (b). It takes it 13 y (spaceship's time) toreturn to Earth. If you were born on Earth the day the ship leftEarth and you remain on Earth, how old are you on the day the shipreturns to Earth?
in terms of y

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