Referring to the above question.  Mr. Thomas is now ready to…

Referring to the above question.  Mr. Thomas is now ready to progress to gait training.  Beginning in the parallel bars the PTA has selected several activities.  Which would be the most appropriate? Standing Push-Ups Lateral Weight-Shifting Hip-Hiking Anterior-Posterior Weight-Shifts Stepping forward & back with the involved lower extremity

Light of intensity I0 and polarized horizontally passes thro…

Light of intensity I0 and polarized horizontally passes through three polarizers. The first and third polarizing axes are horizontal, but the second one is oriented 40.0° to the horizontal. In terms of I0, what is the intensity of the light that passes through the set of polarizers?