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timer Asked: Dec 12th, 2018

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please answer each question including Multiple choices, calculation, and energy conversions. if you are not sure correct or not, you can bold the question and answer.

Solar power towers create high temperature fluid for steam generation by ________. Collecting sunlight with photovoltaic cells and using the electricity generated to heat the fluid. Collecting sunlight in a trombe wall with internal pipes to heat the fluid. Redirecting sunlight to an absorber tube carrying fluid down the center of a reflecting trough. Redirecting sunlight from a large area to a central receiver by reflecting light with mirrors How much power is lost in the transmission of 50 MW of power along a 180 KV high voltage transmission line? The current through the wire is 299 amps and the wire's resistance is 15 ohms. Give your answer in KW. A 25 kg container of nuclear waste containing mostly plutonium-238 is stored for decay and disposal. If plutonium-238 has a half-life of about 88 years, in how many years will less than 1 kg of radioactive waste remain? 88 years 176 years 354 years 264 years 440 years 528 years A 0.02 kg diamond was heated by the addition of 388 joules of energy. If the diamond was initially at 23 C, what is its final temperature. The specific heat of diamond is 520 J/kg-oC. Geothermal energy is most readily tapped for electrical generation where there are naturally occurring geothermal reservoirs. These sources are somewhat rare due to the limited coincidence of high temperature geothermal heat and an underground reservoir. Enhanced Geothermal Systems strive to solve this problem by creating _________ in places of high temperature geothermal heat. supplemental energy geysers artificial reservoirs pipelines heat pumps A geothermal power plant uses dry steam at a temperature of 312 oC and cooling water at a temperature of 16 oC. What is the maximum % efficiency the plant can achieve converting the geothermal heat to electricity? Besides the collection of energy in a nuclear reactor, which other source of energy has its origin in the radioactive decay of matter on Earth? Coal Wind Geothermal Hydro Solar The production of methane from biomass in a landfill is done by __________. anaerobic digestion enzymatic digestion catalytic digestion aerobic digestion Which of the following is a fissile elemental species? Uranium-235 Uranium-238 Iodine-131 Thorium-90 Biomass Energy is considered to be a "green energy" because ________. it is a non-renewable energy source biomass is natural and does not produce carbon dioxide when burned biomass takes more carbon dioxide out of the atmosphere than it contributes burning biomass releases the same amount of carbon dioxide as does decomposition

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