What happen to heat energy after it is released to the atmosphere?
Q. According to the conservation of energy, energy is transformed into other forms of energy. In real cases, for example, in engines, not all chemical energy (from the fuel) is converted to kinetic energy (correct me if I'm wrong) because some of the input energy is dissipated as heat energy. So logically, the heat energy is released to the atmosphere. What happens to the heat energy after that?
Asked by N.H.F - Mon Oct 6 08:20:34 2008 - - 2 Answers - 0 Comments
A. The problem is that heat energy is dissipated, i.e. heat energy that is produced spreads out. The radiators in a lecture room produce heat energy. This heat energy dissipates and the surrounding area becomes very slightly warmer etc. This dissipated heat energy cannot be regained in a useful form.
Answered by Abdullah Eyles - Mon Oct 6 08:49:26 2008
Q. According to the conservation of energy, energy is transformed into other forms of energy. In real cases, for example, in engines, not all chemical energy (from the fuel) is converted to kinetic energy (correct me if I'm wrong) because some of the input energy is dissipated as heat energy. So logically, the heat energy is released to the atmosphere. What happens to the heat energy after that?
Asked by N.H.F - Mon Oct 6 08:20:34 2008 - - 2 Answers - 0 Comments
A. The problem is that heat energy is dissipated, i.e. heat energy that is produced spreads out. The radiators in a lecture room produce heat energy. This heat energy dissipates and the surrounding area becomes very slightly warmer etc. This dissipated heat energy cannot be regained in a useful form.
Answered by Abdullah Eyles - Mon Oct 6 08:49:26 2008
What energy exactly does photosynthesis extract from sunlight?
Q. Photosynthesis, the biological conversion from light energy to chemical energy... But I thought photons have zero mass (therefore zero energy?), so where is this energy coming from? Does it just refer to the extremely small energy that comes from a photon's momentum?
Asked by Lalen - Sun Jun 22 06:58:56 2008 - - 5 Answers - 0 Comments
A. Photons have energy even if they dont have mass (rest mass). Both subjects are not directly related. The energy of a photon is calculated as Energy=frecuency*plank constants and is usally measured in electronvolts. The average photon in solar radiation has an energy of 1.5 electronvolts. Again, no mass is required.
Answered by El fagguito - Sun Jun 22 07:07:41 2008
Q. Photosynthesis, the biological conversion from light energy to chemical energy... But I thought photons have zero mass (therefore zero energy?), so where is this energy coming from? Does it just refer to the extremely small energy that comes from a photon's momentum?
Asked by Lalen - Sun Jun 22 06:58:56 2008 - - 5 Answers - 0 Comments
A. Photons have energy even if they dont have mass (rest mass). Both subjects are not directly related. The energy of a photon is calculated as Energy=frecuency*plank constants and is usally measured in electronvolts. The average photon in solar radiation has an energy of 1.5 electronvolts. Again, no mass is required.
Answered by El fagguito - Sun Jun 22 07:07:41 2008
What energy changes take place when a ball that is falling through the air reaches its terminal velocity?
Q. I know that at terminal velocity, kinetic energy remains constant. I know that potential energy decreases because the height changes and air friction against the ball causing heat but I know that is minimal. I really need to know also, where does all that extra potential energy go because before terminal velocity, I would have said kinetic energy but because this is constant, where does the bulk of the potential energy go. Please correct me if I am wrong.
Asked by supercalofragilistic - Sat Dec 22 17:14:24 2007 - - 7 Answers - 0 Comments
A. The kinetic energy might be constant, but you have to remember that at the point it attains its terminal velocity it is traveling at a great speed. KE is directly proportional to the square of velocity. The heat produced by air friction can not be ignored. There could be other forms of energy transformation taking place, such as sound, light, etc. But the sum of all these different forms of energy would still be equal to the initial potential energy of the ball . teddy boy
Answered by teddy boy - Sat Dec 22 20:01:40 2007
Q. I know that at terminal velocity, kinetic energy remains constant. I know that potential energy decreases because the height changes and air friction against the ball causing heat but I know that is minimal. I really need to know also, where does all that extra potential energy go because before terminal velocity, I would have said kinetic energy but because this is constant, where does the bulk of the potential energy go. Please correct me if I am wrong.
Asked by supercalofragilistic - Sat Dec 22 17:14:24 2007 - - 7 Answers - 0 Comments
A. The kinetic energy might be constant, but you have to remember that at the point it attains its terminal velocity it is traveling at a great speed. KE is directly proportional to the square of velocity. The heat produced by air friction can not be ignored. There could be other forms of energy transformation taking place, such as sound, light, etc. But the sum of all these different forms of energy would still be equal to the initial potential energy of the ball . teddy boy
Answered by teddy boy - Sat Dec 22 20:01:40 2007
Where does the energy for gravity come from?
Q. According to the law of conservation of energy, energy is not created from nothing. It is either converted from mass or from other types of energy. In this case, where does the energy for gravity come from? For instance, the force pushing down the water in Niagara Falls is gravity, and we generate electricity from this energy. Where does this energy come from?
Asked by SnizzleDizzle - Mon Mar 31 07:47:20 2008 - - 6 Answers - 0 Comments
A. Gravity has no energy. the energy of Niagra falls comes from the rain. The sun's energy put the water higher than the falls. when the water is high, it is called potential energy. as the water is pulled lower, it releases energy; this is called kinetic energy. it is not the gravity that has the energy, it is the change in position of the water.
Answered by jon143143 - Mon Mar 31 07:58:44 2008
Q. According to the law of conservation of energy, energy is not created from nothing. It is either converted from mass or from other types of energy. In this case, where does the energy for gravity come from? For instance, the force pushing down the water in Niagara Falls is gravity, and we generate electricity from this energy. Where does this energy come from?
Asked by SnizzleDizzle - Mon Mar 31 07:47:20 2008 - - 6 Answers - 0 Comments
A. Gravity has no energy. the energy of Niagra falls comes from the rain. The sun's energy put the water higher than the falls. when the water is high, it is called potential energy. as the water is pulled lower, it releases energy; this is called kinetic energy. it is not the gravity that has the energy, it is the change in position of the water.
Answered by jon143143 - Mon Mar 31 07:58:44 2008
What is energy and how does it influence matter?
Q. I know it is possible that sub-atomic particles are made of energy-like things called quarks. According to my understanding of them they are more like energy than they are like matter. Unfortunately I have a very basic understanding of these particles and their relationship with energy. I have books about sub-atomic particles but they don't really talk about the influence energy has on matter. Anyone wanna give me a crash course on energy? How would you define it and its effect? Thanks in advance.
Asked by admin - Tue Oct 7 18:45:05 2008 - - 1 Answers - 0 Comments
A. Actually quarks are matter (mass is a better term); they are the fundamental building blocks of protons and neutrons. But from the well-known E = mc^2, where m is mass and c is light speed in a vacuum, we can easily see that all mass is equivalent to energy E. That is to say, we don't need to differentiate between mass and energy because they are just different states of the same thing. In fact, we often, and more correctly, say "mass-energy" when talking about matter because they are equivalent. On the other hand, we know that some particles do not behave like mass should behave. Photons are examples of such particles. For one thing, photons can travel at light speed; mass cannot. Mass cannot travel at light speed because, at… [cont.]
Answered by oldprof - Tue Oct 7 19:22:55 2008
Q. I know it is possible that sub-atomic particles are made of energy-like things called quarks. According to my understanding of them they are more like energy than they are like matter. Unfortunately I have a very basic understanding of these particles and their relationship with energy. I have books about sub-atomic particles but they don't really talk about the influence energy has on matter. Anyone wanna give me a crash course on energy? How would you define it and its effect? Thanks in advance.
Asked by admin - Tue Oct 7 18:45:05 2008 - - 1 Answers - 0 Comments
A. Actually quarks are matter (mass is a better term); they are the fundamental building blocks of protons and neutrons. But from the well-known E = mc^2, where m is mass and c is light speed in a vacuum, we can easily see that all mass is equivalent to energy E. That is to say, we don't need to differentiate between mass and energy because they are just different states of the same thing. In fact, we often, and more correctly, say "mass-energy" when talking about matter because they are equivalent. On the other hand, we know that some particles do not behave like mass should behave. Photons are examples of such particles. For one thing, photons can travel at light speed; mass cannot. Mass cannot travel at light speed because, at… [cont.]
Answered by oldprof - Tue Oct 7 19:22:55 2008
Is worldwide energy drilling and mining going at such a pace that will tank energy stocks in the near future?
Q. I look at a map of energy production around the world. There are so many mines, so many drill sites pumping oil, so much energy being extracted, competing with solar production etc. Is the energy sector bubbled at the top? It just doesn't make sense to me otherwise! Unbelieveable energy mining and drilling! Unbelievable!
Asked by skahhh - Mon Jul 7 09:24:36 2008 - - 1 Answers - 0 Comments
A. There are more drillings than ever before but less is oil is being extracted. Scary but its going to get worse. Here is the link:
Answered by Super Ninja - Mon Jul 7 09:53:46 2008
Q. I look at a map of energy production around the world. There are so many mines, so many drill sites pumping oil, so much energy being extracted, competing with solar production etc. Is the energy sector bubbled at the top? It just doesn't make sense to me otherwise! Unbelieveable energy mining and drilling! Unbelievable!
Asked by skahhh - Mon Jul 7 09:24:36 2008 - - 1 Answers - 0 Comments
A. There are more drillings than ever before but less is oil is being extracted. Scary but its going to get worse. Here is the link:
Answered by Super Ninja - Mon Jul 7 09:53:46 2008
If light and sound are energy waves, are they the same energy but on different wavelengths?
Q. We see light energy waves with our eyes, and hear sound energy waves with our ears. Light can be broken down into different wavelengths meaning we see different colours and can also be broken down into ultra violet and infra red; sound can be different wavelengths making different sounds and pitches. They are both energy waves. Are they the same energy broken down into different wavelengths resulting in us seeing that energy as light and sound?
Asked by cragoogle - Thu Feb 28 09:09:52 2008 - - 6 Answers - 0 Comments
A. wrong. sound waves are not electromagnetic waves. they can't be broken down into anything, unlight light waves.
Answered by pooled08 - Thu Feb 28 16:20:21 2008
Q. We see light energy waves with our eyes, and hear sound energy waves with our ears. Light can be broken down into different wavelengths meaning we see different colours and can also be broken down into ultra violet and infra red; sound can be different wavelengths making different sounds and pitches. They are both energy waves. Are they the same energy broken down into different wavelengths resulting in us seeing that energy as light and sound?
Asked by cragoogle - Thu Feb 28 09:09:52 2008 - - 6 Answers - 0 Comments
A. wrong. sound waves are not electromagnetic waves. they can't be broken down into anything, unlight light waves.
Answered by pooled08 - Thu Feb 28 16:20:21 2008
How much thermal energy does the plant generate in one year?
Q. A typical nuclear power plant generates electricity at the rate of 1060 MW. The efficiency of transforming thermal energy into electrical energy is 1/3 and the plant runs at full capacity for 76% of the year. (Assume that this nuclear power plant is down about 24% of the time for maintenance and refueling.) (a) How much thermal energy does the plant generate in one year? (b) What mass of uranium is transformed into energy in one year?
Asked by sterlin_marlin40 - Mon Nov 5 15:13:16 2007 - - 1 Answers - 0 Comments
A. If q=1060MW Watts are Joules per second, you want joules (or watt-hours perhaps) find how many seconds there are in a year, multiply this by 1/3), then multiply this by .76 This gives you the seconds of production. Multiply this by q to get watts*seconds which is Joules. I'm not sure about the energy transfer from uranium though. E=mc^2 might help
Answered by poseiden_is_back - Mon Nov 5 15:47:34 2007
Q. A typical nuclear power plant generates electricity at the rate of 1060 MW. The efficiency of transforming thermal energy into electrical energy is 1/3 and the plant runs at full capacity for 76% of the year. (Assume that this nuclear power plant is down about 24% of the time for maintenance and refueling.) (a) How much thermal energy does the plant generate in one year? (b) What mass of uranium is transformed into energy in one year?
Asked by sterlin_marlin40 - Mon Nov 5 15:13:16 2007 - - 1 Answers - 0 Comments
A. If q=1060MW Watts are Joules per second, you want joules (or watt-hours perhaps) find how many seconds there are in a year, multiply this by 1/3), then multiply this by .76 This gives you the seconds of production. Multiply this by q to get watts*seconds which is Joules. I'm not sure about the energy transfer from uranium though. E=mc^2 might help
Answered by poseiden_is_back - Mon Nov 5 15:47:34 2007
How much energy per photon is there in a wavelength of 60 micrometers?
Q. How much energy per photon is there in a wavelength of 60 micrometers? How much energy per photon is there in a wavelength of 60 micrometers? I got 3.31 X 10 ^-21 J / photon How much energy for one mole of those photons?
Asked by Juan C - Wed Mar 11 21:57:54 2009 - - 1 Answers - 0 Comments
A. wavelength = speed of light/frequency frequency = c/wavelength = 3E8/60E-6 = 5E12 Hz energy = hf = 6.626E-34 Js * 5E12 Hz = 3.31E-21 J/photon one mole of photons = 6.02E23 photons energy of one mole of photons = 6.02E23*3.31E-21 = 1990 J
Answered by skmiadrt - Wed Mar 11 22:34:49 2009
Q. How much energy per photon is there in a wavelength of 60 micrometers? How much energy per photon is there in a wavelength of 60 micrometers? I got 3.31 X 10 ^-21 J / photon How much energy for one mole of those photons?
Asked by Juan C - Wed Mar 11 21:57:54 2009 - - 1 Answers - 0 Comments
A. wavelength = speed of light/frequency frequency = c/wavelength = 3E8/60E-6 = 5E12 Hz energy = hf = 6.626E-34 Js * 5E12 Hz = 3.31E-21 J/photon one mole of photons = 6.02E23 photons energy of one mole of photons = 6.02E23*3.31E-21 = 1990 J
Answered by skmiadrt - Wed Mar 11 22:34:49 2009
How much energy is used by the internet servers and telecomunications infrastructure to distribute SPAM?
Q. Every internet server or router need processor time to deliver any e-mail to it's correspondence Inbox. Microprocessors needs energy to execute it's instructions. Much of that energy came from oil. Overheating the planet. If we know the amount of energy the SPAM is wasting it could lead to harder penalties to those who use the Internet for that purpose.
Asked by always_smle - Sat Jan 26 20:18:00 2008 - - 8 Answers - 0 Comments
A. Good point. About 90% of e-mail traffic is spam according to my experience, however that is still very small fraction of overall Internet traffic. Besides, not all energy comes from oil, and the amount of oil that comes into feeding telecom infrastructure is quite insignificant compared to what is needed to feed car engines, for example. Not that I am defending spam, but your statement was not exactly right. We need better arguments.
Answered by General Cucombre - Sat Jan 26 20:33:17 2008
Q. Every internet server or router need processor time to deliver any e-mail to it's correspondence Inbox. Microprocessors needs energy to execute it's instructions. Much of that energy came from oil. Overheating the planet. If we know the amount of energy the SPAM is wasting it could lead to harder penalties to those who use the Internet for that purpose.
Asked by always_smle - Sat Jan 26 20:18:00 2008 - - 8 Answers - 0 Comments
A. Good point. About 90% of e-mail traffic is spam according to my experience, however that is still very small fraction of overall Internet traffic. Besides, not all energy comes from oil, and the amount of oil that comes into feeding telecom infrastructure is quite insignificant compared to what is needed to feed car engines, for example. Not that I am defending spam, but your statement was not exactly right. We need better arguments.
Answered by General Cucombre - Sat Jan 26 20:33:17 2008
How much energy do we use on the average workday sitting around desks and walking between lessons?
Q. How much energy do we use each day if it is a very inactive day (no time for sport etc). I only walked between classes, worked at desks all day and now I've been doing homework at my computer for the past few minutes. How much energy, in Kilojoules, would I have used? This is for a school project. I need to work out my energy output in a day. Also if you have a good site for me that would be useful for these basic activities, that would be really helpful.
Asked by Celestial Beast - Mon Jul 20 14:18:50 2009 - - 2 Answers - 0 Comments
A. you burn 1/3 of your Basal Metabolic Rate just by breathing and digesting. Your Basal Metabolic Rate is roughly 10 * your weight calories.
Answered by OldSkhool - Mon Jul 20 14:33:25 2009
Q. How much energy do we use each day if it is a very inactive day (no time for sport etc). I only walked between classes, worked at desks all day and now I've been doing homework at my computer for the past few minutes. How much energy, in Kilojoules, would I have used? This is for a school project. I need to work out my energy output in a day. Also if you have a good site for me that would be useful for these basic activities, that would be really helpful.
Asked by Celestial Beast - Mon Jul 20 14:18:50 2009 - - 2 Answers - 0 Comments
A. you burn 1/3 of your Basal Metabolic Rate just by breathing and digesting. Your Basal Metabolic Rate is roughly 10 * your weight calories.
Answered by OldSkhool - Mon Jul 20 14:33:25 2009
How much energy is there in tidal power?
Q. I think the answer is a lot, but it is not infinate. Tides are caused by the moons gravitational effect on the earths oceans, but equally the oceans have a gravitational effect on the moon. This is slowing down the moon at a very very tiny rate. If we make use of tidal energy, then we slow down the flow of water, therefore increase the rate at which the moon's orbit is being slowed, by an almost infinatesimal amount. Anyone got an estimate for the numbers? Presumably the total energy available is the kinetic energy of the moon: 1/2m(v squared), where m is the mass of the moon, and v is it's velocity. But if the moon slows too much, will it's orbit not decay? How slow can it go before we need to panic? Don't get me wrong; I think tidal… [cont.]
Asked by Hairyloon - Wed Sep 13 20:07:54 2006 - - 7 Answers - 0 Comments
A. Tidal power is already in use in a few locations--Google for that. Of course, inland areas won't benefit much from this, but most of the world's population lives near oceans. Tides are slowing the Moon by a measurable amount--about a tenth of a second per year, with the result that the Moon gradually is moving FURTHER away from Earth, not closer. This will go on until, in a couple billion years, it takes 47 days to complete an orbit of Earth, compared to today's 27.3 days. Of course, the further it is, the less power from the tides.
Answered by tham153 - Wed Sep 20 10:38:48 2006
Q. I think the answer is a lot, but it is not infinate. Tides are caused by the moons gravitational effect on the earths oceans, but equally the oceans have a gravitational effect on the moon. This is slowing down the moon at a very very tiny rate. If we make use of tidal energy, then we slow down the flow of water, therefore increase the rate at which the moon's orbit is being slowed, by an almost infinatesimal amount. Anyone got an estimate for the numbers? Presumably the total energy available is the kinetic energy of the moon: 1/2m(v squared), where m is the mass of the moon, and v is it's velocity. But if the moon slows too much, will it's orbit not decay? How slow can it go before we need to panic? Don't get me wrong; I think tidal… [cont.]
Asked by Hairyloon - Wed Sep 13 20:07:54 2006 - - 7 Answers - 0 Comments
A. Tidal power is already in use in a few locations--Google for that. Of course, inland areas won't benefit much from this, but most of the world's population lives near oceans. Tides are slowing the Moon by a measurable amount--about a tenth of a second per year, with the result that the Moon gradually is moving FURTHER away from Earth, not closer. This will go on until, in a couple billion years, it takes 47 days to complete an orbit of Earth, compared to today's 27.3 days. Of course, the further it is, the less power from the tides.
Answered by tham153 - Wed Sep 20 10:38:48 2006
How is energy from solar panels converted to energy that can be used for solar power?
Q. I want to do a science project where I create my own solar panels out of different materials to see which one will produce the greatest amount of energy. Is this a realistic topic if it has to be done before Thanksgiving? If so, how do I make the solar panels? How do I measure/convert the energy? Please help!
Asked by Dancer - Mon Oct 19 19:56:55 2009 - - 5 Answers - 1 Comments
A. Your best bet is making solar water heating panels. You could make them out of copper, PVC, and garden hose, and compare which gets hotter. Check out this site for ideas. Avoid the scams out there saying you can build your own panel for $200 to power your whole house. You can't. There are some free instructions on the You Build It site that are legit.
Answered by unknown - Wed Oct 21 07:54:06 2009
Q. I want to do a science project where I create my own solar panels out of different materials to see which one will produce the greatest amount of energy. Is this a realistic topic if it has to be done before Thanksgiving? If so, how do I make the solar panels? How do I measure/convert the energy? Please help!
Asked by Dancer - Mon Oct 19 19:56:55 2009 - - 5 Answers - 1 Comments
A. Your best bet is making solar water heating panels. You could make them out of copper, PVC, and garden hose, and compare which gets hotter. Check out this site for ideas. Avoid the scams out there saying you can build your own panel for $200 to power your whole house. You can't. There are some free instructions on the You Build It site that are legit.
Answered by unknown - Wed Oct 21 07:54:06 2009
What is the energy required to make a decorative nutcracker?
Q. What is the energy required to make a decorative nutcracker? As in, how much energy and the type of energy. Thanks in advance for your answer!
Asked by KCWS - Wed Mar 14 00:38:43 2007 - - 1 Answers - 0 Comments
A. It takes about 65 watts of electricity to make a nice decorative nutcracker..
Answered by philbertpheinstein - Wed Mar 14 02:47:19 2007
Q. What is the energy required to make a decorative nutcracker? As in, how much energy and the type of energy. Thanks in advance for your answer!
Asked by KCWS - Wed Mar 14 00:38:43 2007 - - 1 Answers - 0 Comments
A. It takes about 65 watts of electricity to make a nice decorative nutcracker..
Answered by philbertpheinstein - Wed Mar 14 02:47:19 2007
How Energy conservation and distructive interference of waves can be justified?
Q. when two waves move in same medium and thier resultant becomes zero after destructive interference.what about their there energy.will energy becomes zero?where it goes.
Asked by saboor - Sun Jan 18 08:52:56 2009 - - 1 Answers - 0 Comments
A. The energy dissipates as heat. It does not become zero.
Answered by PhysicsDude - Tue Jan 20 03:53:52 2009
Q. when two waves move in same medium and thier resultant becomes zero after destructive interference.what about their there energy.will energy becomes zero?where it goes.
Asked by saboor - Sun Jan 18 08:52:56 2009 - - 1 Answers - 0 Comments
A. The energy dissipates as heat. It does not become zero.
Answered by PhysicsDude - Tue Jan 20 03:53:52 2009
How energy intensive is it to maintain a vacuum?
Q. This is for extracting various alcohols and water from a solution without having to maintain the solution at a very high temperature. I think it might be less energy intensive this way, but I have no data on energy needed to maintain a vaccum. What is the wattage on some of the pumps able to do this? Could it be cost prohibitive compared to just boiling at full temp?
Asked by Brian L - Mon Nov 13 01:54:39 2006 - - 3 Answers - 0 Comments
A. A perfect vacuum, of course, does not exist as far as we know. Approximate vacuums, however, are used in this way quite often to "boil off" liquids from solutions. Some are created by attaching a few pipes to a water faucet. The water reduces pressure in the pipes on its own, and the only energy required is the energy used to turn on the faucet. You can get pretty good vacuums in this way. Much stronger vacuums can be created with an oil diffusion pump, but this involves boiling oil, and for your purposes you may as well just boil the sample.
Answered by Biznachos - Mon Nov 13 02:50:25 2006
Q. This is for extracting various alcohols and water from a solution without having to maintain the solution at a very high temperature. I think it might be less energy intensive this way, but I have no data on energy needed to maintain a vaccum. What is the wattage on some of the pumps able to do this? Could it be cost prohibitive compared to just boiling at full temp?
Asked by Brian L - Mon Nov 13 01:54:39 2006 - - 3 Answers - 0 Comments
A. A perfect vacuum, of course, does not exist as far as we know. Approximate vacuums, however, are used in this way quite often to "boil off" liquids from solutions. Some are created by attaching a few pipes to a water faucet. The water reduces pressure in the pipes on its own, and the only energy required is the energy used to turn on the faucet. You can get pretty good vacuums in this way. Much stronger vacuums can be created with an oil diffusion pump, but this involves boiling oil, and for your purposes you may as well just boil the sample.
Answered by Biznachos - Mon Nov 13 02:50:25 2006
How can geothermal energy be used in the future?
Q. The word geothermal comes from the Greek words geo (earth) and therme (heat). So, geothermal energy is heat from within the earth. We can use the steam and hot water produced inside the earth to heat buildings or generate electricity. Geothermal energy is a renewable energy source because the water is replenished by rainfall and the heat is continuosly produced inside the earth.
Asked by CiNdY - Wed Mar 26 18:53:46 2008 - - 2 Answers - 3 Comments
A. Geothermal energy can be used in the future as an alternative to fossil fuels and coal. It is a good source of energy because it does not cause pollution, and there is obviously a constant supply of it. This means that prices for geothermal energy will be consistent, unlike oil. However, it is a hard technology to master, and can only be used in parts of the world where there is enough heat in the earth (think hotspots or underwater volcanoes). I think some of the Scandinavian countries are using geothermal energy. Other renewable energy sources include hydropower, wind-power, solar power or nuclear power.
Answered by sophie - Wed Mar 26 18:59:25 2008
Q. The word geothermal comes from the Greek words geo (earth) and therme (heat). So, geothermal energy is heat from within the earth. We can use the steam and hot water produced inside the earth to heat buildings or generate electricity. Geothermal energy is a renewable energy source because the water is replenished by rainfall and the heat is continuosly produced inside the earth.
Asked by CiNdY - Wed Mar 26 18:53:46 2008 - - 2 Answers - 3 Comments
A. Geothermal energy can be used in the future as an alternative to fossil fuels and coal. It is a good source of energy because it does not cause pollution, and there is obviously a constant supply of it. This means that prices for geothermal energy will be consistent, unlike oil. However, it is a hard technology to master, and can only be used in parts of the world where there is enough heat in the earth (think hotspots or underwater volcanoes). I think some of the Scandinavian countries are using geothermal energy. Other renewable energy sources include hydropower, wind-power, solar power or nuclear power.
Answered by sophie - Wed Mar 26 18:59:25 2008
What are the energy transfers of the different energy resources?
Q. Can u please explain the different energy transfers that take place for the following energy resources... Geothermal Energy Nuclear Energy Hydroelectric Power Solar Power Biomass Wind Power Waves Tidal Power Coal/Oil/Gas i.e. Gravitational PE to Kinetic energy to Electrical energy. I would appreciate any help. Thank You in advance.
Asked by Jad A - Wed Apr 8 04:35:12 2009 - - 1 Answers - 1 Comments
A. Solar Power: Heat-> Electrical -> Mechanical You can easily get an answer with a little bit of research.
Answered by unknown - Wed Apr 8 04:49:10 2009
Q. Can u please explain the different energy transfers that take place for the following energy resources... Geothermal Energy Nuclear Energy Hydroelectric Power Solar Power Biomass Wind Power Waves Tidal Power Coal/Oil/Gas i.e. Gravitational PE to Kinetic energy to Electrical energy. I would appreciate any help. Thank You in advance.
Asked by Jad A - Wed Apr 8 04:35:12 2009 - - 1 Answers - 1 Comments
A. Solar Power: Heat-> Electrical -> Mechanical You can easily get an answer with a little bit of research.
Answered by unknown - Wed Apr 8 04:49:10 2009
Solar energy- does anyone know of a DIY way to make a solar collector and transfer that energy to batteries?
Q. I would like to learn about solar energy and how I can make some panels for my home, of course with in a reasonable budget. My goal is to be able to run a refrigerator and fan off of battery. Any ideas out there?
Asked by Ex Californian - Tue Jun 17 14:09:49 2008 - - 4 Answers - 1 Comments
A. If your goal is to save money, it will be hard to do that with solar electricity. You can come out ahead under some circumstances, but powering a refrigerator and a fan is an unlikely one. However, if your goal is to learn about this kind of setup, you could get a kit from (say) Harbor Freight for a few hundred dollars, which will (barely) charge a car battery over a period of a couple weeks. The energy you collect could power a fan for several hours. You could also learn about solar electricity just by searching the web. That way, you don't need to spend any money at all. Our solar setup is documented at That said, there are ways you can save money on energy. A solar hot water heater usually pays for itself over time, depending… [cont.]
Answered by roderick_young - Fri Jun 20 11:22:57 2008
Q. I would like to learn about solar energy and how I can make some panels for my home, of course with in a reasonable budget. My goal is to be able to run a refrigerator and fan off of battery. Any ideas out there?
Asked by Ex Californian - Tue Jun 17 14:09:49 2008 - - 4 Answers - 1 Comments
A. If your goal is to save money, it will be hard to do that with solar electricity. You can come out ahead under some circumstances, but powering a refrigerator and a fan is an unlikely one. However, if your goal is to learn about this kind of setup, you could get a kit from (say) Harbor Freight for a few hundred dollars, which will (barely) charge a car battery over a period of a couple weeks. The energy you collect could power a fan for several hours. You could also learn about solar electricity just by searching the web. That way, you don't need to spend any money at all. Our solar setup is documented at That said, there are ways you can save money on energy. A solar hot water heater usually pays for itself over time, depending… [cont.]
Answered by roderick_young - Fri Jun 20 11:22:57 2008
How much energy does it take to manufacture a cell phone?
Q. I have been searching online for days, and I can't establish a solid a number for the energy it takes to manufacture a cell phone, probably because this takes place overseas. At this point, I don't even care if it's representative of most cell phones. Just give me some data..I need it in kilowatt hours. Haha, very funny Dan. Please provide some rationale behind your numbers.
Asked by Buttermilk - Tue Nov 10 11:41:45 2009 - - 2 Answers - 0 Comments
Q. I have been searching online for days, and I can't establish a solid a number for the energy it takes to manufacture a cell phone, probably because this takes place overseas. At this point, I don't even care if it's representative of most cell phones. Just give me some data..I need it in kilowatt hours. Haha, very funny Dan. Please provide some rationale behind your numbers.
Asked by Buttermilk - Tue Nov 10 11:41:45 2009 - - 2 Answers - 0 Comments
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Next week the International . Energy. Agency will release its annual report which is reported to include a second consecutive substantial downward revision in the Agency's forecast for global oil production. Curiously, this reduction in ...
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