With a magnetic field strength of 1.41 tesla, all of the protons in organic compounds will resonate over a narrow range of frequencies near 60 mhz. with a magnetic field strength of 7.04 tesla is employed, all of the protons in organic compounds will resonate over a range of frequencies near

Explanation:

A resonance is obtained when oscillating frequency of magnetic field becomes approximately equal to intrinsic frequency of particles in the nuclei

this method is used in Nuclear Magnetic Resonance or NMR

here the resonant frequency is directly proportional to the strength of magnetic field

from the question,

   initial Magnetic Field = 1.41 Tesla

   Initial resonant frequency = 60 MHz

   final Magnetic Field = 7.04 Tesla

   final resonant frequency =

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force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach