Calculate the uncertainty in the measured magnetic field in part A. The earth's magnetic field is approximately 10° - 10s T. Explain why it is reasonable to ignore the effect of this field for this experiment. 2 (1.5) Use the uncertainty in the length of the pipe to find the uncertainty in the time it would take a mass to fall down the lenath of the pipe. Compare the measured times for the aluminum cylinder and the magnet to the predicted time for a free-falling mass. which, if any, of these three time measurements are consistent with each other?