IP The x and y components of a vector r⃗ are rx = 15 m and ry = -8.5 m , respectively.

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 free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical