Question 6
in which state of matter do the particles move the most freely?
solid
liquid
gas
3 points
question 7
in which state of matter do the particles move somewhat freely but still not enough to fill the entire space of a container?
solid
liquid
gas
3 points
question 8
in which state of matter are the particles the least attracted to each other?
solid
liquid
gas
3 points
question 9
a characteristic property is a property of matter that
changes slowly over time
does not change
cannot be known
question 10
a liquid substance that is beginning to change to a gas has reached its
boiling point
freezing point
solubility level

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.