If the distance between the points (x, 0) and (-7,0)be 10 units, then the possible values of x are(A) 3 and -17 (B) -3 and -17(c) 3 and 17(0) -3 and 17
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... Recently, a new approach based on some simplifying assumptions has been proposed to interpret the core dynamics in the SmC* phase of 8BEF5 [22]. Analyses of several sites in the same molecule have also been successful [23]. ...
... The observed quadrupolar doublet is found to be independent of the azimuthal angle on the NMR time scale. Furthermore, recent deuterium studies of another smectogen in its SmC* phase [22,23] appear to support the idea that deuterium spins relax in a macroscopically uniaxial medium, thereby unable to sense any possible phase biaxiality. The new approach also suggests that the observed spectral densities in the SmC* phase can be understood by taking into account the tilt angle b of the molecular ''director'' with respect to the external ~ B field, viz, one may write the spectral densities J m ðmo; bÞ as follows [29]: in which the azimuthal angle f, describing the rotation of tilt in the helical structure, has been set to zero, and all biaxial spectral densities [21] have been ignored. ...
... Now S zz and S xx-S yy are used to give the potential of mean torque in solving the rotational diffusion equation. In the SmC* phase, S zz values are those extrapolated from the SmA phase [22]. X a and l are needed to evaluate the P eq (n), the equilibrium probability of the nth conformer. ...