You can use the radio waves generated by a hydrogen maser as a standard of frequ

Question

You can use the radio waves generated by a hydrogen maser as a standard of frequency. The frequency of these waves is 1420405751.786 hertz. (A hertz is another name for one cycle per second.) A clock controlled by a hydrogen maser is off by only 1 s in 100000 years. For the following questions, use only three significant figures. (The large number of significant figures given for the frequency simply illustrates the remarkable accuracy to which it has been measured.) How many cycles occure in 3 hrs?

Explanation / Answer

1,420,405,751.786 cycles in a second ; so time of 1 cycle = 7.04 x 10^-10 sec

Number of seconds in 3 hrs = 3*60*60 = 10800 sec

so total cycles in 3 hrs = 10800/(7.04 x 10^-10) = 1534.09 x 10^10 cycles

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