Abungee cord loosely hangs from a bridge. its length while hanging is 79.5 m. when a 67.3 kg bungee jumper is attached and makes her leap, after bouncing around for a bit, she ends up hanging upside down 83.0 m from the jump point, where the bungee cord is tied.

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.

What happens when you slowly pulled the carboard?

Does heating a metal wire increase or decrease its electrical resistance? why?