Aman pushes down on a lever with 45 n and the lever moves 1.5 meters. the other end of the lever lifts a 87.6 n box .4 meters. what is the efficiency of the lever?

Aballet student who learns with the of his instructor is demonstrating learning.

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?