Place the flat sides of the polarizers together and observe the room lights through both polar- izers at the same time. Rotate one of the polarizers until the intensity is minimum. Is any light transmitted through both polarizers when the intensity is minimum? If some light is transmitted, does it have any color? If so, what is the color, and what do you conclude about how the polarizers behave as a function of wavelength (color)?

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

How is the gravitational force related to the distance between two objects?