Moving clocks and time dialation question

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SUMMARY

The discussion centers on calculating the maximal velocity for a clock transported from London to New York, ensuring the time difference to a stationary clock remains under 10^-8 seconds. The participant initially calculated a velocity of 1/3c using the time dilation formula t=t'y but expressed concern that this value is excessively high. The conversation seeks clarification and verification of the calculation method used to derive this velocity.

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  • Knowledge of the speed of light (c)
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phja
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i'm revising for an exam and have this question posed (this isn't homework)

what is the maximal velocity for a clock being transported from london to new york if the time difference to a stationary clock should be less than 10^-8 seconds.

i'm not allowed to use calculators.

i've tried doing it by t=t'y, but get a velocity of 1/3c, which i think is much too high. anyone have any ideas?

thanks.
 
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care to show how you got the 1/3c?
 

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