With a magnetic field strength of 1.41 tesla, all of the protons in organic compounds will resonate over a narrow range of frequ
1 answer:
Answer:
<h3>300 MHz</h3>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 <em>directly proportional</em> 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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The correct answer is:
Work is negative, the environment did work on the object, and the energy of the system decreases.
In fact, the work-energy theorem states that the work done by the system is equal to its variation of kinetic energy:
In this problem, the variation of kinetic energy is negative (because the final velocity is less than the initial velocity), so the work is negative, and this means that the environment did work on the object, and its energy decreased.
1) Frequency:
the energy of the photon absorbed must be equal to the ionization enegy of the atom, which is
The energy of a photon is given by
where is the Planck's constant. By using the energy written above and by re-arranging thsi formula, we can calculate the frequency of the photon:
2) Wavelength: 91.2 nm
The wavelength of the photon can be found from its frequency, by using the following relationship:
where is the speed of light and f is the frequency. Substituting the frequency, we find