As part of a carnival game, a 0.453-kg ball is thrown at a stack of 21.8-cm tall, 0.443-kg objects and hits with a perfectly horizontal velocity of 10.3 m/s. Suppose the ball strikes the very top of the topmost object as shown to the right. Immediately after the collision, the ball has a horizontal velocity of 4.35 m/s in the same direction, the topmost object now has an angular velocity of 1.63 rad/s and all the objects below are undisturbed. If the object\'s center of mass is located 15.3 cm below the point where the ball hits, what is the moment of inertia of the object?What is the center of mass velocity of the tall object immediately after it is struck?

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.