Why is geothermal energy so important for heating and cooling systems and for sustainability?

Q: The label on a candy bar says 400 Calories. Assuming a typical efficiency for energy use by the…

A: Let us consider that the efficiency of the body for energy use is 25%. The energy of the candy bar…

Q: If your body is 20 percent efficient in converting food intake to useful work, how many kcal of food…

A: Write the given values with the suitable variables. η=20 %W=25×105 J Here, η and W are the…

Q: In Arizona, where there are 316 sunny days per year, it requires 330 acres of land to generate 300…

A: First, we can calculate the power density per acre of land in Arizona: 300 MW / 316 days / 330 acres…

Q: According to the World Energy Council, the average household in Mexico consumes about 1600 kWh of…

A: Dimension of solar panels=(1×1)  So area of solar panel=1 m^2 Annual solar energy potential of panel…

Q: A student eats a dinner rated at 2 000 Calories. He wishes to do an equivalent amount of work in the…

A:

Q: Similar to the previous problem, we heat about a cup (238 g) of milk (we’ll treat it like water,…

A: By condition,

Q: On what basis would you classify energy sources as(a) renewable and non-renewable?(b) exhaustible…

A: (a)The energy sources which can be restored or regenerated are called renewable source of energy,…

Q: In a decentralized energy generation system, analyze how solar thermal energy can contribute to…

A: Solar energy is the energy obtained from Sun. This energy is converted to electrical and heat energy…

Q: The label on a candy bar says 400 Calories.  Assuming a typical efficiency for energy use by the…

A:

Q: If a person who normally requires an average of 12,000 kJ (3000 kcal) of food energy per day…

A: The extra energy needed to be worked off  E = 1000 kJ…

Q: If you run down some stairs and stop, what happens to your kinetic energy and your initial…

A: In the absence of dissipative forces, the total mechanical energy of closed system remains…

Q: Geothermal energy uses the subsurface level of the earth to heat up water converting it to steam and…

A:

Q: The internal energy of a 5-kg suitcase starts at 150 kJ. The suitcase is mangled as it travels…

A: Given data, Internal energy of the suitcase = 150 kJ Work done on the suitcase = 10 kJ Heat loss…

Q: What are 3 ways energy is converted into other forms of energy in our everyday regular lives?

A: According to law of Conservation of energy the total energy doesn't change, it can only be…

Q: Rub your hands together vigorously. What happens? Discuss the energy transfers and transformations…

A: Hands are felt warm when rubbed. When we rub the hands,hands are having kinetic energy .It is the…

Q: Every so often, someone claims to have built a machine that can generate energy perpetually from…

A: 1) Thermodynamics first law can also be known as Law of conservation of energy "energy can neither…

Q: Similar to the previous problem, we heat about a cup (230 g) of milk (we'll treat it like water,…

A:

Q: Distinguish between high-quality energy and low-quality energy in terms of organized and…

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Q: At a certain location, the solar power per unit area reaching Earth's surface is 200 W/ m^2,…

A:

Q: How many tonnes of wood per day would be needed for a wood-fired generating station that produces…

A: Given data: Energy produced by burning wood P=1000 MW. Efficiency η=35%. Therefore, total energy…

Q: Many decisions are made on the basis of the payback period: the time it will take through savings to…

A: The energy cost, $ 1.0 per MJ   Insulation cost, $ 4.0 per m2   Surface area, A=150 m2   The heat…

Q: A student eats a dinner rated at 2 000 Calories. He wishes to do an equivalent amount of work in the…

A:

Q: In Arizona, photovoltaic (PV) panels can generate an average annual power of 1 MW/acre. If there are…

A: Given Data :-   Average annual power generation in Arizona =1MW/acre Number of sunny days in Arizona…

Q: Many decisions are made on the basis of the payback period: the time it will take through savings to…

A: Assume that the heat energy per time is 126J/s degree Celsius , savings is 12% and surface area is…

Q: At a certain location, the solar power per unit area reaching Earth’s surface is 200 W/m2, averaged…

A: The solar power incident on the panel when the total area of the panel is A can be expressed as

Q: In an attempt to find the food calories provided by various fruits, you collect the following…

A: According to question we need to find  correctly ranks the fruits from greatest to least energy…

Q: A 55-kg woman cheats on her diet and eats a 540-Calorie (540 kcal) jelly doughnut for breakfast. (a)…

A: Energy of one jelly doughnut E = 540 kcal = 2.25 x106 J                            (since 1 kcal…