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Energy
The Energy category covers the description, definition, and use of all types of energy. Questions of a general nature can be put in the general Energy category. Other sub-categories exist for Fossil fuels, Nuclear energy, and renewables such as Wind, Solar, Hydro, Tidal, and Wave power.
24,905 Questions
When I set my central heating boiler to produce more heat, the temperature in the house rises.
The ice ball or brick floats in water tank Then if the ice melts what will happend?
When the ice ball or brick melts, it will turn into water. The overall water level in the tank will remain the same because the volume of water displaced by the ice when it was floating is equal to the volume of water produced when the ice melts.
What are two advantages of burning garbage for fuel?
- There is a lot of recent carbon in garbage, so burning garbage is usually carbon neutral. If the burning can be used to heat buildings or to generate electricity, then it replaces some fossil fuel burnings. This reduces the effect of global warming.
- Burning garbage means that less garbage goes into landfill which can cause problems like methane generation and pollution seepage.
If the garbage is not burnt at high temperatures there may be other pollutants released which can contribute to air pollution.
What are some disadvantages of using oil?
Some disadvantages of oil are that -
* it is non-renewable and fast depleting; * burning it releases carbon dioxide, a powerful greenhouse gas, that had been stored in the earth for millions of years
* it leaves behind harmful by-products upon combustion, thereby causing a lot of pollution; * mining of oil leads to irreversible damage to the adjoining environment; * Oil spills as well as evaporation and fumes pollute the environment; * Used oil is difficult to recycle. * The price of oil is rising, especially if the real cost of its carbon is included. * Burning it produces carbon dioxide, a major cause of global warming.
=== === The basic problem with coal and other carbon based fuels in not really that they release carbon-- it is that the carbon they release is not then quickly and efficiently absorbed by some other process, eliminating it from the atmosphere. We are taking unimaginably huge quantities of carbon, stored away for eons, and pouring it into the air. It will remain there for eons more, until the earth goes through more of its own balancing cycles. http://sciencedata.blogspot.com/ The disadvantages of oil energy is that it produces carbon dioxide when burned, limited supply of oil, can be environmentally damaging, transportation of oil caused damage to animals. It can have oil spills which destroys ecosystems, kills marine life, isn't good for the environment. It also produces carbon dioxide when oil is being burnt. Also, it is higly toxic. Crude oil is a finite natural resource. It exists as a mixture of hydrocarbons with traces of sulfur and other compounds. In order for useful products to be separated from crude oil, it must be treated with "thermal cracking," an energy-intensive process that separates and reforms different hydrocarbons based on their boiling point.
So, crude oil will run out, and you have to invest energy in order to get usable energy from it. The massive amounts of CO2 released when oil is combusted alter the composition of the earth's atmosphere. Burning oil creates greenhouse gases as a by-product, which can contribute to the effect of global warming. Also, incomplete combustion of oil can form carbon monoxide, which if allowed to build up in a confined area can prove to be faithful. The insecurity of oil in the global financial market is a distinct disadvantage on reliance on oil also.
Most importantly, it is a limited resource, which some day will be gone. We are exploring in deeper waters and finding new ways to extract oil, but this doesn't change the fact that the global supply of crude oil is reduced with production. The new sources of petroleum will be much more expensive. As with any scarce resource, the price will go up and this in turn can make gasoline more expensive. The future increase in the cost of petroleum will make many petrochemicals go up and increase the transportation costs. Suggest you do a google search on petrochemicals to get an idea of how many goods will be affected. The consumption of crude oil as fuel (diesel, gasoline) is a major environmental problem, as combustion causes carbon monoxide and carbon dioxide emissions, and contributes to global warming. Also, the added pollution from the combustion of oil (and coal) contributes to acid rain. An area that is particularly controversial is the degree to which the exploration, extraction and transport of crude oil causes environmental damage. There has been a trend to fewer tanker oil spills, but the ones that have occurred, such as Valdez oil spill caused severe damage. There's controversy over potential for environmental damage from new leases in the Gulf of Mexico, near Florida coast line because of concern of spills and the north slope of Alaska (search for ANWR) because of concern of the effect on wildlife. Drilling and producing operations in the Amazon basin can cause environmental damage, because an oily water is frequently produced with the oil, and can cause damage if not properly treated. (There is a long standing claim of environmental damage from Texaco's operation in Ecuador)
What are the domains of living things?
the three domains of living things are bacteria, archea, and eukarya the three domains of living things are bacteria, archea, and eukarya
Geothermal energy is considered a relatively clean energy source, but it can have negative environmental impacts. These can include the release of greenhouse gases and other pollutants from the underground reservoirs, depletion of the heat source leading to diminished efficiency, and the potential for inducing seismic activity in some cases. However, with proper monitoring and sustainable practices, these impacts can be minimized.
What is the function of upper epidermis in a leaf?
The upper epidermis has several functions. It protects against water loss, regulates gas exchange (there are only a few stomata on the uppermost layer of the leaf) and produces the waxy substance that becomes part of the cuticle.
The previous answer to this question implies that leaves have a SPINAL CORD - note, this is not true!
What is the overall formula for photosynthesis?
The overall formula for photosynthesis is: 6CO2 + 6H2O + light energy -> C6H12O6 + 6O2. This formula represents the conversion of carbon dioxide and water into glucose and oxygen in the presence of light energy, which occurs in the chloroplasts of plant cells.
Why are fossil fuels considered non-renewable?
Because fossil fuels take hundreds of millions of years to form under the Earth's surface. It will take another million years for more to be produced, so we only have a limited supply.
Eventually, more fossils will be made, but by then we will have run out by how much we use them now. If we stop using them so much than we wont die like we are going to.
So essentially, all fossil fuels are considered non-renewable.
What is surface area important for living things?
Surface area is important for living things because it dictates the rate of exchange of materials with the environment. A larger surface area allows for more efficient absorption of nutrients and gases, as well as the release of waste products. This is crucial for processes like respiration, digestion, and photosynthesis to occur effectively.
Does co generation violate the second law of thermodynamics?
No. Co-generation just increases the overall efficiency.
In normal central heating systems a large quantity of heat is lost in the exhaust gas. The flame heats an exchanger which warms the air circulating through the furnace.
In a co-generating plant the flame heats a sink on a thermal-electric device (usually a sterling driven generator). The "cold" side of the device is then cooled by the air circulating through the device.
Who has the most kinetic energy a person running in a race or a plane in flight?
A plane in flight would have more kinetic energy than a person running in a race. This is because kinetic energy is directly proportional to an object's mass and velocity, and a plane's mass and velocity are much greater than that of a person.
Nonrenewable oil is oil that cannot be replaced easily or within a short period of time. It is formed over millions of years from the remains of plants and animals, and once it is extracted and burned, it cannot be replenished within a human lifespan. This makes it a finite resource that will eventually run out.
When you walk upstairs how are you obeying the law of conservation of energy?
Yes. Basically, energy is ALWAYS conserved. In this case, if it takes an extra effort to go up, that's because other type of energy (the energy from your muscles in this case) is converted into gravitational potential energy.
Name 2 units that speed can be measured in?
Speed can be measured in units such as meters per second (m/s) or kilometers per hour (km/h).
Which element has a lower first ionization energy than element S?
Element P (phosphorus) has a lower first ionization energy than element S (sulfur).
What happens when heat is added to liquid water?
When any substance is heated the temperature rises. _____________________ Ordinarily, the above answer is accurate, as far as it goes. But the problem here arises from the fact that the question is unclear. We are not told anything about the amount of heat added to the water. The amount of heat added may be just exactly enough to melt all the ice and no more, it may be more heat than that, or the heat may not be enough to melt all the ice. If you add heat to this system (ice water) and it is not enough to melt all of the ice, then after the system has time to balance the water will remain at zero degrees celsius. The only time the temperature of the water will rise is when more heat is added than is needed to melt all of the ice.
How much energy does 125 watt infrared bulb use?
Any electric lamp should use the amount of energy that is stated somewhere on its body in watts. That wattage could be printed on the glass bulb or on its metal cap and/or on the box it was sold in.
It does not matter if it's an infrared type or any other type of bulb, the wattage it was designed to take is the wattage it should use.
So a 125 watt infrared bulb should use 125 watts of energy.
If the question is really asking how much it costs to run that bulb, then the answer depends entirely on two things:
- the time the bulb is in use
and
- the cost that you have to pay for electrical energy in your locality.
The cost is charged in cents per kilowatt-hour. It may vary according to the time of day or night, depending on the supply service you subscribe to.
If the cost in your area is, say, 15 cents per kilowatt-hour, then running a 125 watt lamp for 2 hours would cost you (125 x 2 x 15) / 1000 = 3.75 cents.
What happens as the molecules in a liquid move around?
As molecules in a liquid move around, they flow past each other, creating a fluid-like behavior. The molecules continuously collide with each other and with the boundaries of the container, leading to the pressure and viscosity characteristics associated with liquids.
Gasoline smell in your house where could it come from?
A gasoline smell in your house could be coming from a gas leak in your appliances, car fumes entering through vents or windows, spilled gasoline, or improperly stored gasoline containers. It is important to immediately identify and address the source to prevent potential safety hazards. Consider contacting a professional to help locate and resolve the issue.
What states that when one form of energy is transformed to another no energy is destroyed?
That's the law of "Conservation of Energy". It says you always end up with the
exact same amount of energy you started out with.
That law has been updated a bit in recent years. There used to be two separate
conservation laws ... one for energy and another one for mass, and they both said
that it couldn't be created or destroyed. Scientists were very worried when they did
some very important experiments, and they saw mass being destroyed and energy
being created! Digging in further, they discovered that energy could change into mass,
and mass could change into energy. That discovery actually made things simpler, because
now, instead of two conservation laws, we only need one. It says that mass and energy
can change from one to the other, but whatever the total (mass + energy) is at the
beginning, the total (mass + energy) must be the same at the end.
But how can you add them up ? How much energy makes how much mass ??
And how much mass makes how much energy ???
We're so happy you asked that.
Maybe you've heard that [ E = M c2 ] .
That's the answer to that one.
What does NAD energy stand for?
NAD stands for nicotinamide adenine dinucleotide, a coenzyme involved in cellular energy production. NAD is crucial for various metabolic reactions in the body, including converting nutrients into energy and supporting cellular functions.
Does Florida have prevailing winds?
South central Florida has always been a windy part of the state because it has the Gulf of Mexico to the west and the Pacific Ocean to the east. Areas near water are especially windy because of tides and currents.
What is the most nonrenewable resource?
The most nonrenewable resource is likely uranium used for nuclear power generation, as it is finite and takes millions of years to form. Once extracted and used, it cannot be replenished within a human lifetime.
Yes, natural gas is considered a non-renewable resource because it takes millions of years to form. Therefore, it is exhaustible, meaning it can be depleted over time through extraction and consumption. However, the rate of extraction and discoveries of new reserves can influence how long natural gas will be available.
