In her garage a bicyclist hangs a box of bike parts from a long spring attached to the ceiling the spring stretches 0.80m with the box attached and has a spring constant of 150n/m what is the elastic potential energy stored in the spring

What is work? how much work is done to move an object 0 meters?

Which branches of natural science include the study of an organism that lived 10 million years ago

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.