A sled of weight 450 N is being pulled uphill by Saedie and Kojak. The hill makes a 45 degree angle with the horizontal. Find the force pulling the wagon downhill.

What are the phases shown in a and d called?

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

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?