Consider a basketball rolling (without slipping) down an inclined plane. The basketball is basically a thin spherical shell, so its moment of inertia I = 2 3 M R2 . Given the angle of 32.9 ◦ between the incline and the horizontal, calculate the basketball’s center’s acceleration. The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/s 2 .

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.

The amount of potential energy possessed by an elevated object is equal to what?

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.