3 A ball rolls at a speed of 4 km/h towards the back of a bus traveling forward at a speed of 35

km/h. What is the magnitude of the ball's velocity relative to the ground?

(33 Points)

O A: 30 km/h

B: 31 km/h

O c: 35 km/h

OD: 39 km/h

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?

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface