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Energy Conservation
This category contains questions and answers related to energy conservation.
1,324 Questions
Why do you need to keep heating houses?
Heating houses is essential to maintain a comfortable and safe living environment, especially in colder climates. Proper heating helps prevent health issues related to cold temperatures and also protects the structural integrity of the building by preventing issues like frozen pipes and mold growth.
What type of carbon based molecules are the source of most of the energy in the foods you eat?
carbohydrates which consists of carbon combining with hydrogen and oxygen which combined in the ratio 2:1
Why does the light bulb not work when the filament is broken?
A light bulb works by passing an electric current through the filament, which is usually made from a high resistance substance such as tungsten. When the current flows through, the filament glows which produces the light. When it burns out, no electricity passes and no glowing occurs.
Source: i just know
Brass is a mixture because it is composed of two or more elements (copper and zinc) that are physically combined but not chemically bonded. This allows the properties of both elements to be retained in the final alloy, giving brass its unique characteristics such as corrosion resistance, malleability, and attractive color.
What form of energy is lightning?
Lightning is electrical energy. In the process of discharging that energy, (the lightning strike) it converts into mechanical energy (sound), heat energy, electro-mechanical energy (as herd as static on an AM radio), light energy. Energy cannot be created, or destroyed only converted.
Harvesting the power of lightning has proved to be very difficult, and no one has successfully found a way. A lightning strike happens very quickly, so extremely high electrical power is involved. It is difficult to convert high voltage power to the lower-voltage electricity that can be stored. Theoretically, yes, the energy from a lightning bolt be caught and stored. Practically, no, you would never be able to build a big enough capacitor to hold the charge. There is just too much energy in a lightning bolt to harness with today's technology. although there are those that believe this fulminology machine actually exists and at this moment in time is being withheld due the enormity of its consequences?
its plasma
What do you understand by the term short-circuiting?
Short circuiting in the context of work, means diverting the energy that is intended to do work on a "load" in a manner that the energy that is expended does not do the work as intended. In electricity that usually means that the power of the electricity goes to the return line without reaching the load. Example: a piece of metal falls across the battery + terminal connecting it to the - terminal. The battery is discharged through the piece of metal and the energy is not used to turn the starting motor. In the context of a stream following a path around a hydroelectric dam, the water energy is not captured by the dam to convert into electricity.
According to the law of conservation of energy, energy can't really get lost. The term "lost energy" really refers to energy changing from a high-value form to a lower value form, i.e., to a form in which it is no longer useful.
Does hot water in a plastic bottle causes it to expand?
Not necessarily. You have to have a space of air in the bottle. The expansion/contraction happens because the water is heating/cooling the air. Liquids are usually considered incompressible and hence will not change their volume when heated or cooled (unless it evaporates or melts!).
Assuming that you have an air space:
If you have cold water in a sealed bottle that you heat up, it will expand.
If you put hot water in a bottle and seal it, it will contract as it cools.
If the bottle is not sealed, there will be no volume change.
Why is it not possible to convert complete heat energy to mechanical energy?
It is not possible to convert complete heat energy to mechanical energy because of the second law of thermodynamics, which states that some energy will always be lost in the form of waste heat during a conversion process. This loss occurs due to inefficiencies in the conversion process and the natural tendency for systems to move towards higher entropy.
Why does sound travel faster through hot water?
equation for speed of sound in a medium:
c=sqrt(B/rho)
B=bulk modulus
rho=density
all else being constant, and increase in temperature will cause an expansion (usually) of the material. The expansion will decrease the density (mass per unit volume) and thus increase the speed of sound through the material.
What energy do you use while watching tv?
While watching TV, you primarily use electrical energy to power the TV set and any additional devices like cable boxes or streaming devices. The TV itself converts this electrical energy into light and sound energy that enables you to watch your favorite shows.
How do you convert degrees into calories?
this is a complicated process where you put a thermometer in a glass 1/4 full and then light say a monster munch on fire then you place the food under the cup and you measure it with heat (if this is not what you wanted to know I'm sorry i misunderstood)
What is the relationship between height and energy?
Height and energy are not directly related, as height refers to physical stature while energy pertains to the capacity to do work. However, a taller individual may require more energy to sustain their body due to higher basal metabolic rate. Additionally, energy levels can impact physical performance, which could indirectly affect someone's ability to engage in activities that may be influenced by their height.
What will happen if we keep using nonrenewable energy?
Continued use of nonrenewable energy sources will lead to depletion of finite resources, environmental degradation, and increased greenhouse gas emissions contributing to climate change. This can have far-reaching consequences on ecosystems, human health, and global economies. Transitioning to renewable energy sources is essential for a sustainable future.
What is the most efficient way to generate electricity and is better for the environment?
f you've been following the story of Thane Heins and have been looking for an update to his story, I had one appear this weekend in the Toronto Star. It was a year ago when I first wrote about Ottawa-born Heins, who says he has developed an electrical generator that redirects the energy in "Back EMF" that usually slows down an electrical motor-generator as it accepts load. In other words, Heins claims to have eliminated the magnetic friction and replaced it with magnetic acceleration. He calls this effect "regenerative acceleration," but those who are skeptical of his claims say that acceleration does not equate to power/torque/work and that Heins has failed to demonstrate there is such a link.
Is it just a more - potentially much more -efficient motor? Or is it, well, more than that? Heins says it's not perpetual motion or an overunity machine, yet, but he believes he can get it there as he continues to refine his prototype. I won't go into much more detail, you can read the article if you want an update. I decided to do an update after receiving an e-mail from Lee Smolin, a highly respected theoretical physicist at the Perimeter Institute in Waterloo. Smolin said the public deserved an update to show that Heins is misguided. I'll let the reader make that judgement. All I can say is that Heins continues to press on, and bit by bit is making what he feels is progress. The cast of characters he's interacted with over the past year range from rockstar Neil Young to UFO researcher Steven Greer, who claims to be an ET contactee.
I like this story, mostly because Heins is doggedly determined and acutely aware of how controversial his claims are, but at the same time he isn't prepared to censor himself. He tells it like he sees it, and invites others to come and kick the tires. I didn't mention this in the story, but he's decided to take a kind of open-source approach to licensing his technology. The idea, the way I understand it, is that others can license it and build real-world applications on top and that all members of the licensing network get to share in the advancements and the revenues that are generated - assuming it gets to that stage.
Obviously, as attempts are made to put this technology into a real application, we'll know once and for all whether it works or falls flat. That's perhaps my biggest criticism: Heins has spent the past year refining a prototype that really doesn't answer the questions that people have. Regardless of how simple it is, all people want is to see the technology used in some way where real work - beyond acceleration - is clearly observable and irrefutable.
That said, I'm curious. Besides, I like an underdog and am a sucker for a good story, no matter how it ends. Some will say that by giving him publicity I'm encouraging him, giving him credibility, and helping perpetuate some sort of lie or con job. Having been a reporter and columnist at one of the largest newspapers in North America, I can tell you this: I, like many of my colleagues, have probably done more to unknowingly spread lies and con jobs by writing about so-called credible people and companies. At least with Heins, he wears his heart and motivations on his sleeve.
- Solid (such as metal)
- Liquid (such as water)
- Gas (such as air)
What type of elements tend to have low ionization energies?
The elements in the lower right part of the Periodic Table. Cs, Fr, Ra, Ba etc.
Is taking shorter showers saving energy?
Yes, taking shorter showers saves energy because less hot water needs to be heated. Heating water accounts for a significant portion of household energy use, so reducing shower time can result in lower energy consumption and reduced carbon emissions.
Is gravitational energy an example of kinetic energy?
No, gravitational energy is a form of potential energy, not kinetic energy. Gravitational energy is the energy stored in an object due to its position in a gravitational field, while kinetic energy is the energy an object possesses due to its motion.
Will a UV lamp give energy to a solar panel?
The main problem with solar panels is that they can only utilize energy from a few discrete wavelengths, which are not in the ultraviolet range. It is a matter of quantum physics: the electrons in the atoms in the solar panel will only be excited by photons that match their energy levels. Unlike incandescent lamps, which, like the sun, emits photons in a continuum of different wavelengths, the different varieties of UV lamps release photons from atoms at discrete wavelengths, with very little, if any, photons in the visible range that might be fodder for solar panel usage.
What type of fuel formed by the remains of sea creatures and plants millions of years ago?
Fossil fuels, such as coal, oil, and natural gas, are formed from the remains of sea creatures and plants that have been transformed over millions of years due to heat and pressure underground.
How much energy does South Korea use?
South Korea's total annual energy consumption is approximately 538 terawatt-hours. The country relies heavily on imported fossil fuels for its energy needs, but is also investing in expanding its renewable energy sources to reduce its carbon footprint.
Why energy can not be created?
The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. This principle is supported by the first law of thermodynamics, which describes the conservation of energy in a closed system. In other words, energy can change from one form to another, such as from potential to kinetic energy, but the total amount of energy in a closed system remains constant.
Is the Ritz's combination principle to be a statement of energy conservation?
The Ritz combination principle states that the energy of two or more atomic orbitals can combine to form new hybrid atomic orbitals. It is not a statement of energy conservation but rather a tool used in molecular orbital theory to describe the structure of molecules.
Why does a nuclear power plant not produce air pollutants?
Nuclear power plants produce energy through splitting atoms, not by burning fossil fuels. This process does not produce air pollutants like carbon dioxide, sulfur dioxide or nitrogen oxides. However, there are environmental concerns with nuclear waste disposal and the potential for accidents like Chernobyl or Fukushima.
