Time standards are now based on atomic clocks. A promising second standard is based on pulsars, which are rotating neutron stars (highly compact stars consisting only of neutrons). Some rotate at a rate that is highly stable, sending out a radio beacon that sweeps briefly across Earth once with each rotation, like a lighthouse beacon. Suppose a pulsar rotates once every 1.434 806 448 872 75 4 ms, where the trailing 4 indicates the uncertainty in the last decimal place (it does not mean 4 ms).(adsbygoogle = window.adsbygoogle || []).push({});

(c) What is the associated uncertainty of this time?

I attempted to solve the problem find the average between 1.434 806 448 872 79 and 1.434 806 448 872 71 (in seconds, meaning i already divided by 1000m/s) yet I could not get the correct answer.

I also used the answer in part (b) as a base to find the average

That also failed.

I've got the correct answer for (b) but cannot figure out (c)

Heres (b) in case you were interested

b) How much time does the pulsar take to rotate 4.0 106 times? (Give your answer to at least 4 decimal places.)

answer is: 5739.225795

help please!!

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# Homework Help: Units of Conversion (Pulse)

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