Lead (Pb) is a material that becomes superconducting at T = 4.2 K. Its critical field
at 4.2 K it is 0.05 Tesla.
a) Plot the 4.2 K magnetization of a lead sample as a function of the
temperature. (1 point)
b) Plot the 4.2 K magnetization of a lead sample as a function of the
applied magnetic field. (1 point)
c) Plot the resistivity of lead as a function of temperature in the range
from T = 0K to T = 300K.
