It takes 3 hour and 10 minutes to ride the railway to the top of Pikes Peak in Colorado. The tram will travel a total distance of 14.32 km. What is the speed of the tram?

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?

Distinguish between a transverse wave and a longitudinal wave.

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes