If an astronomer outside of our Galaxy were to observe the Milky Way, make an estimate for what they would measure for the total luminosity of CO emission from the molecular clouds.

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

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?