Refer to the following information for the next two questions.
A pair of toy cart wheels are rolled obliquely from a smooth surface onto two plots of grass - a rectangular plot as shown at the left, and a triangular plot as shown at the right. The ground is on a slight incline so that after slowing down in the grass, the wheels speed up again when emerging on the smooth surface. Discuss with your partner the path and direction of travel for each cart. You need to finish each sketch on a sheet of paper. Be sure to show the orientation of the wheels inside the plots and on the other side.
Refer to the following information for the next question.
Red, green, and blue rays of light are Incident upon a glass prism as shown below. The average speed of red light in the glass is less than in air, so the red ray is refracted. When it emerges into the air it regains its original speed and travels in the direction shown. Green light takes longer to get through the glass. Because of its slower speed it is refracted as shown. Blue light travels even slower in glass.
Refer to the following information for the next question.
Below we consider a prism-shaped hole in a piece of glass - that is, an "air prism."
Refer to the following information for the next question.
Light of different colors diverges when emerging from a prism. Newton showed that with a second prism he could make the diverging beams become parallel again.
Refer to the following information for the next four questions.
The sketch shows that due to refraction, the man sees the fish closer to the water surface than it actually is.
|