Questlon 6 of 10 Which two types of energy does an apple falling to the ground have? A. Potential energy
B. Nuclear energy
C. Kinetic energy
D. Elastic energy
E. Sound energy

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?

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?

Most short-period comets do not have randomly oriented orbits because