Two paramedics are lifting a person on a stretcher. one of the paramedics exerts a force of 350 n at 58o above the horizontal and the other exerts a force of 410 n at 43o above the horizontal. what is the weight of the person and the stretcher?

True or false graphs must include scales that increase by the same amount

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.

Which is the most accurate name for the ionic compound cas?