Go to the screen "mars mission landing sites," and and select opportunity landing site (2004). explore all five zoom levels offered, making sure to read the captions at the tops of the screens. based on the information provided, why was the landing site, called meridiani planum, chosen for the opportunity mission? a. the region was already known to have minerals likely to have formed in liquid water. b. the region was in the only part of mars that had not yet been explored. c. the region is near the martian equator, which makes landing easier. d. the region was already known to have very small rocks called "blueberries" that likely formed in liquid water. e. the region has very low elevation, and therefore might once have been in an ancient ocean.

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.