Question

At a relativistic Subway sandwich shop', two Subway employees, Emmy and Albert, 15 feet apart, each holding one toothpick. Albert sits to the east of Emmy. Emmy a Albert have only one job: insert a toothpick into the approaching sandw Albert have synchronized their wristwatches, and have agreed to insert their when their watches read noon. A 30 foot-long sandwich down the assembly line moving from the west to the east at a speed of 4/5 c. Answer all of the following questions from the reference frame of the sandwich (a) what is the value of the relativistic factor γ? (b) Who inserts their toothpick first? Albert or Emmy? Or do they insert their toothpicks at the same time? nd toothpicks (a "party sub") comes rushing (c) For how much time does the sandwich say the sandwich has only one toothpick in it? (d) In the sandwich's frame, Emmy travels west. How far does she travel while the sand- wich has only one toothpick in it? (e) How far apart are the two toothpicks on the sandwich? Hint: It will help to draw three pictures: one in the shop (Earth) frame, and two in the sandwich frame.

Answer 1

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