Write a two paragraph report about what you learn about horsepower, including Watt's impact on the scientific community and modern society. Remember, for research writing, you need to cite your source!

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?

What happens to the light rays when they hit the specimen?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.