The average solar flux incident on a horizontal surface in the United States (averaged over 24 hours and 365 days) is about 180 W=m2 [57.06 Btu=(h ft2)]. How much land 20 Heating and Cooling of Buildings: Design for Efficiency would be needed to supply the total energy demand of the United States, approximately 801018 J (76 quad) per year, by means of photovoltaics (efficiency around 10%) and biomass (efficiency around 1%)? Compare with the land area of the United States, 9.16106 km2 (3.54106 mi2).

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

Utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must available hint(s)utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must pump water back into their cells to counter its loss due to osmosisactively pump water back out of their cells to counter its inflow due to osmosissynthesize membranes that are impermeable to substances that upset osmotic balanceactively pump salt back out of their cells to counter its inflow due to osmosis

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?