The inductance of the resonant circuit (n0 = 10 MHz) is a long single-layer coil with a diameter d = 10 mm. How much will the resonant frequency of the circuit change if a superconducting cylinder with a diameter of d/2 is inserted into the coil over its entire length? The concentration of superconducting electrons is ns = 1028 m-3, temperature T Tc.

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