Which substance in table 5.2 requires the smallest amount of energy to increase the temperature of 51.5g of that substance by 10k ?
all of these are specific heats of some substances at 298 k.
so n2(g) is 1.04 j/g-k
al (s) .90 j/g-k
fe (s) .45 j/g-k
hg (l) .14j/g-k
h2o (l) 4.18 j/g-k
ch4 (g) 2.20 j/g-k
co2 (g) .84 j/g-k
caco3 (s) .82 j/g-k

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

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.